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Digital Handheld Optical Power and Energy Meter Console


  • Power and Energy Measurements for Free Space and Fiber Applications
  • Designed for High Accuracy, Reliability, and Ease of Use
  • Over 25 Compatible Sensors

PM100D

Multiple Display
Options

Photodiode, Fiber, Integrating
Sphere, Thermal, and Pyroelectric
Sensors Available

Detector Options

Related Items


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Item # PM100D
Compatible Sensors Photodiode, Thermal, and Pyroelectric
Optical Power Rangea 100 pW to 200 W
Optical Energy Rangea 3 µJ to 15 J
Available Sensor Wavelength Rangea 185 nm - 25 μm
Display Refresh Rate 20 Hz
Bandwidtha DC - 100 kHz
Photodiode Sensor Rangeb 50 nA - 5 mA
Thermopile Sensor Rangeb 1 mV - 1 V
Pyroelectric Sensor Rangeb 100 mV - 100 V
  • Sensor Dependent
  • Ranges Selectable in Watts (Photodiode and Thermopile) or Joules (Pyroelectric) and is dependent on the sensor used.

Features

  • Handheld Digital Power Meter Console
  • Designed for Coherent and Incoherent Light Source Measurements
  • Power and Energy Measurements for CW and Pulsed Source Detection
  • Advanced Measurement Capabilities
  • Large 4" LCD Display with Multiple Display Options
  • Compatible with Over 25 Sensors (Shown Below)
  • External 2 GB SD Memory Card for Storing and Transferring Data
  • USB 2.0 Interface
  • Long-Life Internal Li-Polymer Battery
  • Sensor Upgrade and Recalibration Services Available
  • Optical Power Monitor PC Software Available (See Software Tab for Details)

The PM100D is the cornerstone of Thorlabs' optical power and energy meter consoles and is the digital counterpart to the PM100A analog power meter console. The console (and sensor, sold separately) is ideal for use as a CW and pulsed source power meter, incoherent optical source power meter, general light power meter, fiber power meter, and more. The display on the PM100D features adjustable brightness settings, with the option to turn off the backlight completely while still being readable.

The PM100D is compatible with more than 25 photodiode, slim photodiode, integrating sphere, fiber, thermal, and pyroelectric sensors designed for use from the UV to the Mid-IR. See the Sensor Selection tab for further information.

This power and energy meter console is also available as a kit, bundled with our most popular sensors. Please visit our power meter kits page for more information. If you have any questions regarding these kits, or would like to suggest other kit options, please contact Tech Support with inquiries.

For a touchscreen version of the PM100D with more advanced spectral correction features, inputs for temperature and humidity sensors, data logging, and additional memory, we offer the PM400 capacitive touchscreen power and energy meter console. We also offer wireless, handheld, self-contained power meters, which feature an ultra-slim sensor with a built-in OLED display as well as Bluetooth® and USB features.

Console Design
The compact housing has a large, 4” backlit display with a resolution of 320 x 240 pixels and illuminated buttons, all of which make operation in dark labs easy. The LCD’s clear GUI offers easy data readouts with an intuitive navigation scheme. Interactive tooltips help to operate the device by giving the user step-by-step operating instructions, displaying the next step on the screen.

Intelligent Sensor Connection
Click to Enlarge

Thorlabs' C-Series Power Meter Sensor Connectors Include the Sensor Calibration Data

The PM100D features four standard measurement screens. The first option is a numeric readout useful for standard power and energy readings. The second option is a tuning needle typically seen on analog devices, however, optimized to run as a digital readout on the display screen. Third is a tuning graph, which is very convenient for fine tuning CW and pulsed sources.

The unit can also be run in a data acquisition mode. Simply start the scan and the unit automatically starts recording data such as current power/energy, minimum, maximum, standard deviation, and other important statistics recorded over the acquisition period. The PM100D also features several user customizable displays and audio tuning for use when the detector is not within visual range. See the Display Screens tab for further information.

Connectivity
The sensor connector, shown to the right, enables "hot swappable" quick sensor exchange. The sensor connectors contain all the sensor information including NIST-traceable responsivity curves, sensor types, and model number.

A slot for an SD memory card (a 2 GB SD card is included) allows data recording even in stand-alone operation, giving the user large memory storage when recording data in the field or away from a computer in the lab. Data can also be recorded via the USB PC connection and optical power monitor software. This software is capable of handling up to eight consoles simultaneously. The features of the PC control software are highlighted in the Software tab.

In addition to remote control operation and data logging/recording, the USB connection can also act as the charging system for the Li-Polymer battery. Also included is an AC battery charger which uses an intelligent charging management system to improve battery lifetime and reduce battery memory effects.

Recalibration Service
Recalibration services are available for our thermal and photodiode power sensors, pyroelectric energy sensors, and consoles. We recommend your Thorlabs sensor and console be recalibrated as a pair; however, each may be recalibrated individually. To order this service for your sensor or combined sensor and console, scroll to the bottom of the page and select the appropriate Item # that corresponds to your sensor. To order this service for only your console, please contact Tech Support.

Sensor Upgrade Service
Thorlabs' current line of C-Series sensors and power meter consoles are not compatible with old power meter consoles and sensor heads, respectively. We offer a sensor upgrade service if you want to use your existing sensors with a new power meter console. Note: upgraded sensors will be incompatible with old power meter consoles and new sensors converted to work with older consoles will not be compatible with the PM100D. Please contact our Tech Support team for details.

Item #PM100D
Display
Display Type Graphical LCD 320 x 240 pixels, LED Backlight
Display Screens Numerical, Bar Graph, Line Graph, Statistics, Simulated Analog Needle
Viewing Area 81.4 mm x 61.0 mm
(3.20" x 2.40")
Refresh Rate 20 Hz
Audio 1x Speaker
Sensor Interface
Compatible Sensors All Photodiodes, Thermopiles, and Pyros
See Below for Full Sensor Specs
Time Constant Correction <1 s
AD Converter 16 bit
Trigger (Pulse Measurements, Pyroelectric Sensors) Adjustable, 0.1 - 100%
Connector DB9F, Left Side
Sensor Temperature Control Thermistor
Temperature Range -10 to 80 °C
Analog Outputs
Signal Amplified Input Signal (Not Corrected)
Voltage Range 0 to 2 V
Accuracy ±3%
Bandwidth Up to 100 kHz, Dependent on Sensor and Settings
Connector SMA, Left Side
Digital Outputs
Memory 2 GB Removable SD Card
Connector / Interface Mini USB / USB 2.0
Power
Battery Li-Polymer, 3.7 V, 1300 mAh
Charger / DC Input 5 V / 1 A
Dimensions and Mounting
Dimensions (L x W x H) 180 mm x 105 mm x 38 mm
(7.09" x 4.13" x 1.50")
Weight <0.5 kg (<1.1 lb)
Mounting Options Kickstand; 1/4"-20 Post Thread
Operating Temperature> 0 to 40 °C
Storage Temperature -40 to 70 °C

Sensor Compatibility Specs

Item #PM100D
Detector Compatibility Photodiode Sensors: S1xxC Series
Photodiodes (Max 5 mA)
Thermal Sensors: S3xxC Series
Thermopiles (Max 1 V)
Pyroelectric Sensors: ESxxxC Series
Pyros (Max 100 V)
Measurement Ranges 6 Decades; 50 nA - 5 mA
Ranges Selectable in W,
Sensor Dependent
4 Decades; 1 mV - 1 V
Ranges Selectable in W,
Sensor Dependent
4 Decades; 100 mV - 100 V
Ranges Selectable in J,
Sensor Dependent
Wavelength Ranges 200 nm - 1800 nm 190 nm - 25 μm 185 nm - 25 μm
Power / Energy Ranges 100 pW - 20 W 100 μW - 200 W 10 μJ - 15 J
Units W, dBm, W/cm², A W, dBm, W/cm², V J, dBm, J/cm², V
Accuracy ±0.2% of Full Scale (5 µA - 5 mA)
±0.5% of Full Scale (50 nA)
±0.5% of Full Scale (10 mV - 1 V)
±1% of Full Scale (1 mV)
±0.5% of Full Scale (100 mV - 100 V)
Display Resolution 1 pA / Responsivity Value (A/W) 1 µV / Responsivity Value (V/W) 100 µV / Responsivity Value (V/W)
Bandwidth DC - 100 kHz, Dependent on Sensor and Settings DC - 10 Hz, Dependent on Sensor and Settings DC - 30 Hz, Dependent on Sensor and Settings
Wavelength Correction Sensor Dependent Sensor Dependent Sensor Dependent

For a full list of the sensor head specifications please visit the Photodiode Power Sensors, Thermal Power Sensors, or Pyroelectric Energy Sensors pages. For other information, please contact tech support.

Features

  • Header line with sensor information, date/time and battery state
  • Status line with warning annunciators Bar graph and configurable left and right sub display areas to display a minimum and a maximum value or a ratio of both values (numerical screen only)
  • Tool tip text above the menu
  • Easily accessible menu soft buttons
GUI Overview

On the top bar, the sensor, date and time, and battery life indicator are shown.

The main window contains one of the six standard display views described below. Here, the numerical readout is shown along with min and max values.

Below the main window is a bar graph displaying relative and absolute changes in power and energy.

The bottom bar on the PM100D contains the eight menus controlled by the D-pad.

PM100D Numeric Display

These menus at the bottom of the display access all the standard and customizable displays on the PM100D. The text display above the sub menus provides further assistance in navigating these menus.

Power and energy range, wavelength, measurement configuration, units, audio tuning, measurement views, and the system menu are all accessible from this bottom menu.

The bottom menu also allows customization of the display screen to include frequency, power density, and min and max values.

Numeric Screen (Power Mode) Statistics Screen (Power Mode)

PM100D Numeric Display

This display combines a clear numerical 4-digit read out of the optical power, a bar-graph function with zooming capabilities, and configurable sub displays.

PM100D Numeric Display

The statistics display shows the actual, minimum, maximum and mean power values in linear and logarithmic representation; further the standard deviation, the max/min ratio, the number of samples and the elapsed time.
Trend Graph (Power Mode) Needle Tuning (Power Mode)

PM100D Trend Graph Display

For laser tuning and beam alignment to visualize changes and trends together with an additional 4-digit numerical value of the absolute power.

PM100D Needle Display

A display imitating an analog needle together with an additional 4-digit numerical value for laser tuning tasks. A special feature is a resettable max hold indicator and a shiftable tuning sound.
Pulsed Numeric Screen (Energy Mode) Pulsed Statistics Screen (Energy Mode)

PM100D Pulsed Numeric Display

This display combines a clear numerical 4-digit read out of the optical energy, a bar-graph function with zooming capabilities, and configurable sub displays.

PM100D Pulsed Statistics Display

The statistics display shows the actual, minimum, maximum and mean energy values in linear and logarithmic representation; further the standard deviation, the max/min ratio, the number of samples and the elapsed time.
Pulse Bar Graph (Energy Mode)  

PM100D Pulse Chart Display

Like the Trend Graph (Power Mode) this easily shows changes and trends together with an additional 4-digit numerical value of the absolute energy of incident beam pulses.

The user can customize the display screen by selecting various measurement tasks to be shown on the screen. Some screens are partly configurable by the user, for example, the user can display the min and max values within a certain time period or enable visual and audible peak indicator as a tuning aid. The display on the PM100D features adjustable brightness settings, with the option to turn off the backlight completely while still being readable.

PM100D Sensor Connectors

D-type Female

DB9 Female

PinConnection
1+5 V (Drive max 50 mA from this pin)
2EEPROM Digital I/O
3Photodiode Ground (Anode), Thermal and Pyro Sensor Ground, Analog Ground
4Photodiode Cathode
5Pyro-Electric Sensor +
6DGND
7PRESENT (Connect this pin via a 1kΩ - 10kΩ resistor to Pin 3 (AGND))
8Thermal Sensor +
9N.C.

 

Analog Output

SMA Female

 

SMA Female

0 ... 2 V

Computer Connection

USB Type Mini-B

USB Type Mini B

USB Type Mini-B to Type A Cable Included

Standard Photodiode Sensor Mounting Options

Thorlabs Standard Photosdiode Sensors compact design allows easy integration into existing setups. Typical mounting configurations including post, cage, and lens tube options are available. Shown on this page are several different choices for mounting these sensors.

The Standard Photodiode Sensors are compatible with all S120-xx Series fiber adapters. FC/PC and SMA adapters are shown on the right. Adapters for SC, LC, and ST connections are also available.

Flip up mounts are convenient for quick power measurments from a static location. The sensor can be placed in the path of the laser beam for the power measurment and flipped down during normal operation of the system.

FM90 Right Angle Flip-Mounts are shown to the right. Thorlabs also offers the TRB1 Articulating Post Mount. The lockable articulating mount offers almost unlimited positioning of the sensor head. The articulating mount is shown on an S13xC Slim Photodiode Sensor below.

The Standard Photodiode Sensors also feature SM1 threaded connections on the front face. The SM1 theading provides easy mounting to 1" lens tube systems and quick release mounts.

Shown to the right are the KB1P Quick-Release Post Mount and QRC1A Quick-Release 30 mm Cage Mount. Both mounts feature SM1 threaded connections to the sensor heads.

Note: Due to the thickness of the S12xC sensor, the QRC1A and CP90F (shown below) quick release mounts can only be fully removed from the cage system by backing them off an open end. The two mounts are easily removed from the cage system if only three cage mounts are used. See the picture on the right.

Thorlabs also offers the CP90F 30 mm Cage Plates with Quick-Release Mounts. These mounts feature magnetically coupled mounting for easy and repeatable mounting.

Note: Like the QRC1A, the CP90F can not be removed from a closed cage system.

Slim Photodiode Sensor Mounting Options

Thorlabs' Slim Photodiode Sensors are designed to fit into tight optic arrangements such as cages, lens tubs, and optic dense free space arrangements.

Shown to the right is a S130C Sensor inserted into a 30 mm cage system. The application shown highlights the ease for which the sensor can be inserted into the cage, and the minimal space needed to take a power measurment.

The Slim Photodiode Sensors may also be mounted on a TRB1 Articulating Mount. This mount allows repeatable insertion of the sensor into tight optic arrangements. After the measurement is made, the sensor may be rotated out of the beam path for normal operation.

Microscope Slide Photodiode Sensor Mounting Options

S170C Post Mounted with RA90
S170C Mounted on a Post

The S170C may be post mounted via the 8-32 (M4) tap in the side of the housing.

The S170C microscope slide power Sensor is designed so that it can be mounted directly in a microscope slide holder. The 76.0 mm x 25.2 x 5.0 mm sensor head has the same footprint as a standard microscope slide and is compatible with most standard upright and inverted microscopes. The photo to the right shows the power sensor flipped over so that the engraved back of the housing can be used for alignment.

This power sensor also has an 8-32 (M4) tap for post mounting. In the photo to the far right, an RA90 is used with two Ø1/2" posts to mount the sensor head in a horizontal orientation.

Integrating Sphere Photodiode Sensor Mounting Options

Thorlabs' Integrating Sphere Photodiode Sensor provides a low loss cavity for diverging, non-uniform, or off-axis beam measurements. These integrating spheres are ideal for all fiber based applications due to the beam divergence at the end of the fiber.

Shown to the right is an S140C Integrating Sphere with S120-FC Fiber Adapter. Also shown is an S140C with a S140-BFA Bare Fiber Adapter. The Bare Fiber adapter features a mounting clamp and light shield to decrease interference from ambient light.

Compact Fiber Photodiode Sensor Mounting Options

Thorlabs' Compact Fiber Photodiodes are the ideal choice for a portable, fiber coupled power meter. The S15xC sensors are compatible with a wide variety of fiber connections. PM20-xx adapters are available to couple FC, PC, SC, LC, SMA, and ST connectors with the sensors. Shown to the right is a S150C Sensor with FC and SMA connector adapters.

Shown to the far right is a PM200 console with S150C sensor connected to a FC connectorized optical fiber. This setup is ideal for portable in the lab and in the field use.

Pyroelectric Energy Sensor Mounting Options

Thorlabs' Pyroelectric Energy Sensors are ideal for measuring pulsed sources. These pyroelectric sensors provide direct energy readings for those sources. The sensors are designed to handle medium to high energy pulses from Excimer, YAG, and other high power lasers.

Mounting options include post (with insulating adapter) and cage configurations, shown to the right.

Compatible Power Meters

  • PM100A Analog Power and Energy Meter Console
  • PM100D Digital Power and Energy Meter Console
  • PM100USB USB Interface Digital Power Meter
  • PM200 Touchscreen Power and Energy Meter Console
  • PM400 Capacitive Touchscreen Power and Energy Meter Console
  • PM160, PM160T, and PM160T-HP Wireless Handheld Power Meters with Bluetooth® Technology
  • PM16 Series Compact USB Power Meters

The Optical Power Monitor software is not compatible with the PM320E Benchtop Power Meter.

Optical Power Monitor

The Optical Power Monitor GUI software features power measurement, readout from up to eight power meters, and remote wireless operation.

For details on specific software features, please see the user manual, which can be downloaded here.

Users interested in the legacy Power Meter Software can find it by visiting the software page here.

Software Download

Optical Power Meter Utility
Click to Enlarge

Measurement Mode: Set up and configure up to eight power meters.
Optical Power Meter Utility
Click to Enlarge

Tuning Mode: Simulated analog needle and digital measurement value provided. Delta Mode, enabled above, shows the fluctuation range during the measurement period.
Optical Power Meter Utility
Click to Enlarge

Statistics Mode: Calculate numerical statistics for a pre-determined measurement period. The panel displays the analyzed values in a bar graph and the results as numerical values.
Optical Power Meter Utility
Click to Enlarge

Data Logging: Enable long-term measurement and simultaneous recording from up to eight power meters. Save data as .csv files for later processing while measurement results are displayed in a graph in real time. 

Optical Power Monitor GUI Software for Touchscreen, Handheld, and USB-Interface Power Meters

Features

  • Operate up to Eight Power Meters Simultaneously
  • Record and Analyze Measurements in Real Time
  • Intuitive Analog Display and Graphing Modes
  • Configurable Long-Term Data Logging
  • Compatible with USB and Bluetooth® Connections

The Optical Power Monitor software GUI enables seamless control of up to eight power meters that are connected via USB or Bluetooth® wireless technologya. The latest software, firmware, drivers, and utilities for these power meters can be downloaded here

Multiple data measurement and analysis functions are integrated into the GUI package. The interface offers a user-friendly design with minimal use of color and low brightness that is ideal use in dark lab environments while wearing laser safety glasses. Measured data can be displayed in real time as a simulated analog needle, digital values, line graph, or bar graph. Continuously logged and short-term measurements can be recorded for data viewing and analysis at a later point. A built-in statistics mode analyzes measured data and continuously updates to reflect new measurements within the pre-determined measurement period.

The Optical Power Monitor software package installs the GUI, which then can be used to control the touchscreen, handheld, or USB-interface power meters. Firmware updates for supported power meters are also available. Programming examples and drivers for interfacing with our power and energy meter consoles using LabVIEW, Visual C++, Visual C#, and Visual Basic are installed with the software; refer to the manual for details. 

Please note that the Optical Power Monitor Software uses different drivers than the Power Meter Utilities Software and Thorlabs recommends using the new driver TLPM.dll. For users who wish to use the legacy Power Meter Software or use custom software designed using the older PM100D.dll driver, a Power Meter Driver Switcher program is included for easy swapping of the installed driver between the two versions. 

a. The PM160, PM160T, and PM160T-HP power meters are equipped with Bluetooth® connections.

Handheld Power Meter with iPad
Click to Enlarge

The PM160 wireless power meter, shown here with an iPad mini (not included), can be remotely operated using Apple mobile devices.

This tab outlines the full selection of Thorlabs' Power and Energy Sensors. Our photodiode and thermal sensors are compatible with all of Thorlabs' current line of power meter consoles, while our pyroelectric sensors are compatible with all of our current power meter consoles except for the PM100A Analog Power Meter Console. In addition to the power and energy sensors listed below, Thorlabs also offers all-in-one, wireless, handheld power meters and compact USB power meter interfaces that contain either a photodiode or a thermal sensor, as well as power meter bundles that include a console, sensor head, and post mounting accessories.

Thorlabs offers three types of sensors:

  • Photodiode Sensors: These sensors are designed for power measurements of monochromatic or near-monochromatic sources, as they have a wavelength dependent responsivity. These sensors deliver a current that depends on the input optical power and the wavelength. The current is fed into a transimpedance amplifier, which outputs a voltage proportional to the input current.
  • Thermal Sensors:  Constructed from material with a relatively flat response function across a wide range of wavelengths, these thermopile sensors are suitable for power measurements of broadband sources such as LEDs and SLDs. Thermal sensors deliver a voltage proportional to the input optical power.
  • Pyroelectric Energy Sensors: Our pyroelectric sensors produce an output voltage through the pyroelectric effect and are suitable for measuring pulsed sources, with a repetition rate limited by the time constant of the detector. These sensors will output a peak voltage proportional to the incident pulse energy.

Power and Energy Sensor Selection Guide

There are two options for comparing the specifications of our Power and Energy Sensors. The expandable table below sorts our sensors by type (e.g., photodiode, thermal, or pyroelectric) and provides key specifications.

Alternatively, the selection guide graphic further below arranges our entire selection of photodiode and thermal power sensors by wavelength (left) or optical power range (right). Each box contains the item # and specified range of the sensor. These graphs allow for easy identification of the sensor heads available for a specific wavelength or power range. 

Photodiode Power Sensors
Thermal Power Sensors
Pyroelectric Power Sensors (Not Compatible with PM100A)
  • The response time of the photodiode sensor. The actual response time of a power meter using these sensors will be limited by the update rate of your power meter console.
  • Typical natural response time (0 - 95%). Our power consoles can provide estimated measurements of optical power on an accelerated time scale (typically <1 s) when the natual response time is approximately 1 s or greater. As the natural response times of the S415C, S425C, and S425C-L are fast, these do not benefit from accelerated measurements and this function cannot be enabled. For more information, see the Operation tab here.
  • With intermittent use: maximum exposure time of 20 minutes for the S401C, otherwise maximum exposure time is 2 minutes.
  • All pyroelectric sensors have a 20 ms thermal time constant, τ. This value indicates how long it takes the sensor to recover from a single pulse. To detect the correct energy levels, pulses must be shorter than 0.1τ and the repetition rate of your source must be well below 1/τ.

Sensor Options
(Arranged by Wavelength Range)

Sensor Options
(Arranged by Power Range)


Posted Comments:
krzysztof.anders  (posted 2018-12-14 21:06:32.34)
After deleting all files and directories on SD card I'm unable to write statistics file - every time I get Error 0x000000BE "Invalid directory name". I was trying also to format SD card (FAT32) and putting there PM100LOG directory - still the same problem
jlm  (posted 2018-10-01 14:17:08.03)
Hey I am trying to interface to your console PM100D with a c++ program written in QT. In the document https://www.thorlabs.com/software/MUC/OPM/v1.1/TL_OPM_V1.1_web-secured.pdf you state that I should find a header file at; “C:\Program Files (x86)\IVI Foundation\VISA\WinNT\include\TLPM.h” Unfortunately I cannot locate such a file. I tried to repair the installation, but that did not mend the issue. Can you help me?
nreusch  (posted 2018-10-04 04:58:17.0)
This is a response from Nicola at Thorlabs. Thank you for your inquiry. Yes, you are right the header file should be stored there. As this does not seem to be the case, I will send you the file via email.
kay.schaarschmidt  (posted 2018-08-08 15:23:22.83)
Hi, we are trzing to use the Thorlabs software and labview to read out data from a PM100D. It worked for occasionally but suddenly an error kept occuring Error -1073807345 occurred at PM100D Initialize.vi Neither our self-made labview program, nor the Thorlabs software is currently working anymore. Help appreciated.
nreusch  (posted 2018-08-09 10:59:53.0)
This is a response from Nicola at Thorlabs. Thank you for your inquiry! This seems to be a connection issue. I recommend to start troubleshooting this by using the Thorlabs software. Which version is installed on your PC? I will contact you directly to provide further assistance.
user  (posted 2018-06-20 13:03:01.267)
The cable on the wand is quite annoying. Will you ever offer a wireless sensor?
YLohia  (posted 2018-06-20 04:26:31.0)
We offer wireless sensors here: https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=7233
hi243  (posted 2018-06-09 19:50:50.447)
Hi, I have the PL450B blue laser diode (450nm, 80mW) and I wish to measure the optical power coming out of this laser diode when it is pulsed at 30mW. The laser beam will be obstructed by a tuning fork element I am using, so the final optical power that I need to detect is around 1mW. My lab already has the PM100D console, so I just need help from you on deciding on a suitable power sensor/photo diode which can help me measure optical powers in the range 1mW-80mW (@450nm). Thanks
mvonsivers  (posted 2018-06-13 09:03:15.0)
This is a response from Moritz at Thorlabs. Thank you for your inquiry. The S121C would be suitable to measure powers of 500 nW - 500 mW in the wavelength range 400 - 1100 nm. Please note that for the measurement of pulsed sources special considerations have to be taken into account. I will contact you directly for further discussion.
magnus.engholm  (posted 2018-03-26 09:49:29.23)
Hi, We have the PM100D console and several photodiode and thermal sensors. Now, we are interested to measure the energy from a Xenon flash tube, hence a single pulse measurment. Can you please advice if/how this can be performed with the PM100D and what sensor neded?
swick  (posted 2018-03-28 04:15:29.0)
This is a response from Sebastian at Thorlabs. Thank you for the inquiry. We recommend pyroelectric sensors for single pulse energy measurements. It depends on several optical parameters (pulse width, average power, beam diameter, repetition rate) if these sensors are suitable for your light source. I contacted you directly for assistance.
pier29  (posted 2018-03-05 03:34:23.977)
And I also want to know whether the device (S/N P0005229) is compatible with S120VC or not. Spec. information says that "For the S120VC, these specifications are valid for devices with serial numbers 1203xxx or higher."
wskopalik  (posted 2018-03-05 08:06:34.0)
This is a response from Wolfgang at Thorlabs. Thank you very much for your inquiry! Yes, the PM100D is compatible with the sensor S175C, S120VC and all other currently offered power meter sensors. The information you have found on the website for the S120VC is only concerning the specifications we give for this sensor, but not the compatibility. The specifications have changed a while ago, so for sensors with serial numbers lower than 1203xxx they are slightly different. I will contact you directly to provide further assistance.
pier29  (posted 2018-03-05 03:28:17.093)
Hi, I already have PM100D (with S122C) and its serial number is P0005229. Is this device compatible with S175C? Thank you.
wskopalik  (posted 2018-03-06 09:17:38.0)
This is a response from Wolfgang at Thorlabs. Thank you very much for your inquiry! Yes, the PM100D is compatible with the sensor S175C and all other currently offered power meter sensors. I will contact you directly to provide further assistance.
louis_declerck  (posted 2017-12-08 19:13:13.053)
Hi, I am currently working with a spectrometer and the optical powermeter PM100A from thorlabs. My question to you guys is how the powermeter calculates the optical power from W into W/cm². Which area is chosen therefore? Another question is how the optical power is calculated itself. Is that done by a sort of integration over a range of wavelengths around the 'preferred wavelength' in the settings? This is very important for me since the data from a spectroscope are not corresponding to data from the PM100A. Sincerely yours, Dr Louis Declerck
swick  (posted 2017-12-18 03:41:00.0)
This is a response from Sebastian at Thorlabs. Thank you for the inquiry. PM100A can not display power densities so I think this is about PM100D. To display the power density in W/cm² in the right sub display it is necessary to enter the diameter of the incident beam or at an overfilled sensor the diameter of the sensor aperture. In the Meas Config menu the beam diameter can be set. I have contacted you directly for further assistance.
lokirune  (posted 2017-11-08 00:29:25.34)
Hi. I just lost power supply for PM100D. Where can I get them ? Thanks.
mdiekmann  (posted 2017-11-10 06:23:27.0)
This is a response from Meike at Thorlabs: Thank you for contacting us! We will get in touch with you directly to provide a quote for the power supply.
aye.aung  (posted 2017-10-04 23:04:07.507)
Dear Sir/Mdm, We are using PM100D to measure optical power of LEDs. The wavelength of LED is 850 nm. The sensor that we used is S120C which can measure from 400nm-1100nm. We set 850 nm at PM100D and get measurement. We also tried to set various wavelengths (400, 500,.., 1000, 1100 nm and so on) and get measurements. It is observed that the peak power is occurred to be at 1100 nm and the power at 850nm is lower than most of the measurement powers at other wavelengths. Please kindly advise. Appreciate if you could contact us. Thanks.
wskopalik  (posted 2017-10-05 04:54:48.0)
This is a response from Wolfgang at Thorlabs. Thank you very much for your inquiry. The wavelength you enter on the PM100D determines which responsivity is used to convert the current coming from the photodiode into a power values. This is necessary due to the spectral dependence of the responsivity of photodiodes. The sensor itself can however only measure the total power of a beam and cannot separate different wavelengths. This can lead to inaccuracies when you measure LEDs with a wide spectral distribution, because some parts of the spectrum may not be converted with the correct responsivity. The difference in the results you see is basically the spectral dependence of the responsivity of the sensor. The responsivity is quite low around 400nm and 1100nm, in between it increases to a maximum at around 950nm - 1000nm. You should see the inverse of that in the power values when you change the wavelength which agrees with what you have seen. I have contacted you directly to discuss all this in more detail.
DingR.F.1987  (posted 2017-04-05 17:06:16.62)
We would like to use S130vc & PM100D for measuring laser power. And we want to connect PM100D to NB via USB. Thus, what is the range of sampling rate will we obtain? Could we adjust it? Thank you.
swick  (posted 2017-04-06 03:13:43.0)
This is a response from Sebastian at Thorlabs. Thank you for the inquiry. In Thorlabs Optical Power Meter Utility at "Log Config" you can adjust the Number of Samples, the Interval Time (min. 0.1s) and the Averaging. Via Labview the max. sampling rate would be 300Hz.
abyangphilip  (posted 2017-03-02 20:40:14.097)
I'm using your device PM100D. Just now the power meter can't read anything from the sensor and displayed Zero. It can read when I press the connector to the power meter with much strength. But it just can't read after I stop pressing the sensor connector. I try using other sensors and still the same. I'm wondering if the connecting part of the power meter has bad contact. Should I open the power meter and change a new connector?
swick  (posted 2017-03-06 03:07:53.0)
This is a response from Sebastian at Thorlabs. Thank you for the inquiry. I have contacted you directly for assistance.
ww40556  (posted 2016-12-19 22:02:45.42)
I'm trying to connect PM100D by Visual C++, following by the Programming Reference, but I can't found the driver page. How could I connect PM100D by Visual C++. Thanks.
wskopalik  (posted 2016-12-21 02:59:02.0)
This is a response from Wolfgang at Thorlabs. Thank you very much for your inquiry. I am sorry for this issue and have contacted you directly to troubleshoot this in detail.
user  (posted 2016-03-07 09:21:29.703)
I'm using your device for the real time monitoring of few msec wide optical pulses, therefore I have the same problem as described in the previous message by gbeckford93. By writing my own application which only requests the data, I have done precise timing tests on your device and found that it is possible to increase the number of samples per second by concatenating multiple "READ?" on the same SCPI command. As example, by issuing the SCPI command "READ?;READ?;READ?;READ?;READ?" the instrument will respond with a string containing a list of 5 measurement that, if the averaging is set at 1 and auto range is disabled, are separated by 2.338 msec (2.369 msec with auto range enabled) instead of the 3 msec separation that would be obtained by retrieving the measurements by means of consecutive "READ?" in separate SCPI commands. Unfortunately, the FIFO buffer dedicated to the device output is only 256 bytes and the buffer filling condition is not handled by the firmware so, if the SCPI responce string requires more than 256 bytes, all the exceeding chars will be lost. Considering then that each measurement is transfered to PC using 15/16 ASCII chars (depending on sign), only up to 16 measurement can be requested on a single SCPI command without the risk of receiving an ASCII string truncated to 256 chars. By retrieving then arrays of 16 measurements, rather than single values, my application is able to read from your device up to 416 samples per second that (a part a small gaps between the arrays) are equispaced by 2.338 msec Considering that time requested for ADC conversion is only 0.333 msec, the remaining 2 msec are entirely spent by the device firmware to process the data and could certainly be significantly reduced if two additional SCPI Commands, rather standard in this kind of instruments, were implemented also in your device: - "CONFigure:ARRay" and "READ:ARRay?" to setup and retrieve an array of multiple measurement in a single com
shallwig  (posted 2016-03-09 05:34:09.0)
This is a response from Stefan at Thorlabs. Thank you very much for your valuable feedback. We will review your ideas and check how we can improve the units here. As you left no contact data, please contact us at europe@thorlabs.com for further questions.
gbeckford93  (posted 2016-01-27 14:31:47.583)
Does the software currently available (For both single and multiple devices) allow readings of 1kHz? Even with the interval at 0 and the averaging at 1 the most I am able to get is around 300Hz. If not then how can I increase the samples per second? Thank you.
shallwig  (posted 2016-01-28 06:39:37.0)
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. The sampling speed of the currently available software is limited to around 300 Hz. This limitation has several reasons, mainly from the GUI which queries also the status of the device and sensor and saves the data into a file.This could be bypassed by writing a short own application which only requests the data. In the Software package also drivers for Labview, Visual Basic, C++ and C# are included. You can download Power meter application notes for programming from the “Programming Reference” Tab http://www.thorlabs.com/software_pages/viewsoftwarepage.cfm?code=PM100x&viewtab=5 Another limitation for getting equidistant data will be the USB connection. Sampling at 1 kHz is possible by using the PM100Ds Analog output. The Bandwidth is DC-100 kHz dependent on the sensor. I will contact you directly to check your application in more detail.
chang.chen  (posted 2015-09-30 16:44:51.837)
Hello, I bought two these powermeters with silicon detectors. But one of the powermeter PM100D didn't work. It shows cannot detect the sensor. I have tested the sensor in the good powermeter, and the sensor works. Is there a way to fix the broken powermeter? Thanks, Dr. Chang Chen imec, Belgium
shallwig  (posted 2015-09-30 11:50:28.0)
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. I am sorry for the problems you face with one of your power meters. I will contact you directly to troubleshoot this in detail.
eh8423  (posted 2015-09-16 18:32:03.177)
I am using the powermeter with some C code to measure the transmission through a device. Halfway through my measurement the powermeter stops working and gives the error that it cannot write to the serial port. Why is this? Am I sampling too fast?
shallwig  (posted 2015-09-17 03:48:11.0)
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. I am sorry for the problems you are facing with our device. We will contact you directly to troubleshoot this in detail.
jeffb  (posted 2015-05-26 18:29:20.047)
Are the S120VC and S120C detectors NIST traceable calibrated for irradiance? The detector aperture is specified as 9.5 mm but is the tolerance of the aperture negligible, calibrated for, or already accounted for in the specs? thanks!
shallwig  (posted 2015-05-27 06:48:28.0)
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. All our detectors are only NIST traceable calibrated in terms of absolute power. The setup we use for calibrating our sensors can be found on our website in the power meter tutorial if you click on the “calibration” Tab: http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=6188 We use a monochromator which has about 2mm beam diameter. Therefore the aperture dimensions and its tolerances are uncritical for the S120VC and S120C. Both have an input aperture of 9.5mm diameter. First a reference scan is carried out and the reference current (IRef) vs. wavelength is recorded. This allows the calculation of the optical power at each wavelength step. The Reference photodiodes are recalibrated annually at PTB or NIST, which gives the traceability. After that we replace the reference by the diode under test (DuT) and repeat the wavelength scan. This time the current (IDuT) vs. wavelength gets recorded. During any calibration scan, a monitor diode is used to observe power variations due to lamp aging. The ratio of the actual monitored value during calibration to that during the reference scan is used to correct the calibration scan. As soon as the deviation exceeds 1%, a repeated reference scan is carried out. The responsivity of the DuT is then calculated over the entire specified wavelength range of the DuT with a step size of 5 nm. These data sets (responsivity and wavelength) are saved to the sensor's memory, located in the DSUB connector. Additionally, the calibration data are printed out to the Certificate of Calibration and are saved to our server. Irradiance you can also display with our power meter consoles by entering the beam diameter. But the given value is a calculation made from the measured optical power and the beams dimensions. I will contact you directly to discuss your needs in more detail.
lhkorea  (posted 2014-11-25 15:15:08.25)
Hi. We have used a number of PM100Dand sensor head S155C and have some problems. These devices shows smaller power data than real value(measured by other sensor head). Furthermore, these shows radical power data change when 'Range' is changing to upper or lower range at 'Auto range on' state (for example, if power data is 44uW within ~45uW range, after then, the power data increases slightly over 45uW, the power data is just changed to around 130uW right after the measurement range is changed to ~450uW.) This problem applies to all PM100Ds and S155Cs we have. I think there is some problem about sensing calibration between pm100D and S155C(power measurement using a S146C sensor head has no problem now). At the first time when we used these devices, there was no problem like this. I don't know the reason of this problem exactly, but I guess this problem was caused since we used these devices by connecting to PC. Power measurement using PC software fixes the range option as 'Auto range', so we can't avoid this problem. Please reply asap. Thanks.
shallwig  (posted 2014-11-25 03:57:58.0)
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. I will contact you directly to troubleshoot this issue in detail.
lhkorea  (posted 2014-11-25 15:15:08.25)
Hi. We have used a number of PM100Dand sensor head S155C and have some problems. These devices shows smaller power data than real value(measured by other sensor head). Furthermore, these shows radical power data change when 'Range' is changing to upper or lower range at 'Auto range on' state (for example, if power data is 44uW within ~45uW range, after then, the power data increases slightly over 45uW, the power data is just changed to around 130uW right after the measurement range is changed to ~450uW.) This problem applies to all PM100Ds and S155Cs we have. I think there is some problem about sensing calibration between pm100D and S155C(power measurement using a S146C sensor head has no problem now). At the first time when we used these devices, there was no problem like this. I don't know the reason of this problem exactly, but I guess this problem was caused since we used these devices by connecting to PC. Power measurement using PC software fixes the range option as 'Auto range', so we can't avoid this problem. Please reply asap. Thanks.
user  (posted 2014-02-28 08:14:35.767)
This is a response from Juergen H. at Thorlabs. Thank you very much for your inquiry. The analog output provides the amplified photodiode current or the amplified thermal or pyroelectric sensor voltage. With thermal sensors the analog output shows the direct amplified and accelerated voltage response from the sensor. With pyroelectric sensors the signal from the analog output is the pulse response from the sensor prior to the peak detection circuit. The signals from the analog outputs are not wavelength and zero corrected. The analog output voltage is range dependent and can be calculated to: U(out)[V] = 2V / full scale range value [V,A] x measurement value [V,A] The analog output voltage can go from -0.3V to +2.3V.
abul_ukproject  (posted 2014-02-27 17:15:14.057)
Hi we would like to know for the anaalog output of 0-2V, what does it correspond to in terms of power? We are using an optical chopper and a lock-in amplifier hence the need has arisen for a dictionary to translate the voltage readings back into power. Please reply quickly so that we can proceed with our research. Thanks from Singapore
lee.cairns  (posted 2014-01-28 09:23:05.91)
Hi, we have a number of these in various labs, and we frequently use these to log optical power over long periods of time. However, the units suffer from sporadic signal drop outs (over 7 drop outs in 48 hours!!) is there anything we can do to prevent this, or is this unit not designed to monitor power over long periods of time?
tschalk  (posted 2014-01-28 10:35:46.0)
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. I am sorry that you experience connection issues with our power meter. The device is designed to monitor power over long periods of time and 48 hours shouldn’t be an issue. Please check if you are using the latest firmware, Version 2.3.2, of ours. If this is not the case please perform an update, the latest firmware can be found here: http://www.thorlabs.de/software_pages/viewsoftwarepage.cfm?code=PM100x. For installation instructions please consult the users manual. I will also contact you directly in case that you experience any further difficulties.
joe.zott  (posted 2013-12-30 15:34:25.703)
I am a current PM100D customer. We own 3 devices currently and looking to purchase another. I am doing some testing now and seeing signal drop outs in the PC console that don't show up on the meter face and don't appear to be real. I am running newest firmware/software versions (2.3.2 etc.). Is there anyway to avoid this happening?
jvigroux  (posted 2013-12-31 05:06:23.0)
A response from Julien at Thorlabs: The discrepancy between what is shown on the computer and what is shown on the console is probably related to the fact that the refresh rate of the display is limited to 10Hz, while one can access much higher display rate on a computer. This however does not explain why there is the change in the first place. I will contact you directly to disucss the details of your set up and see what the origin of this problem could be.
emeyersc  (posted 2013-12-17 14:57:47.157)
We own a number of PM100D but seem to frequently lose the DC power supplies. Are you able to sell us those separately?
tschalk  (posted 2013-12-18 05:28:32.0)
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. We can provide the power supply separately. This is not a standard item, so you wont find it on the website. We will contact you directly with more detailed information.
d.albach  (posted 2013-11-05 14:47:54.683)
Dear Sir or Madam, we lost our hard cases which are delivered together with the PM100D. Is there any chance to get the hard cases stand-alone? Best Regards, Daniel
jvigroux  (posted 2013-07-31 07:24:00.0)
a response from Julien at Thorlabs: thank you for your inquiry! The Labview example should normally be included on the USB stick that is delivered together with the power meter. The file name is "PM100D Simple Example" which is in the folder Applications of the USB stick. I will contact you per email and send you the data. the data carrier means the USB stick. I am sorry if this point was not clear. Finally, concerning the averaging, you can indeed use the AVER command to modify the average count n_a so that the value returned is already the average of the last n_a measurement values.
tschalk  (posted 2013-11-06 03:50:10.0)
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. We can can provide the case separately. I will contact you directly with detailed information.
snaghizadeh  (posted 2013-07-31 01:14:45.897)
Dear Sir/Madam, There is an example LabView VI on page 43 of operation manual(not quick reference) under section 6.3.2 Instrument Driver Example. I could not find the related VI inside the USB stick that came with PM100D powermeter box. Further, I do not understand what you exactly mean by "data carrier" in the manual, is it a folder name? Finally, I was informed by a colleague that powermeter has an averaging circuitry inside it and we do not need to write any sub VI for it. That is sending command AVER is sufficient. we have just powermeter sensors, does this mean that when we send the command AVER, the device automatically understands that "power" is going to be averaged?! Thank you in advance for your time and help. Regards, SN
david.kortbawi  (posted 2013-07-24 17:36:02.92)
I don't see calibration service the the PM100D (or sensors) listed in the catalog. Could you please provide pricing and turnaround time to calibrate a PM100D and S120C sensor. In case my e-mail does not come through, please send info to david.kortbawi@dkengineering.com Thanks, Dave
tschalk  (posted 2013-07-25 06:02:00.0)
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. The calibration service for our photodiode sensors can be found here: http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=3328 at the bottom of the site. The services are called CAL1, CAL2, CAL-S130 and CAL-S132. For the S120C you would need the service CAL1. The calibration for the power meter console PM100D is included when you order a sensor calibration. I will contact you directly to provide more detailed information.
paul.lauria  (posted 2013-07-19 13:00:07.21)
We have a couple PM100D's with S120C, and I'm trying to use them for a time-study of laser power vs. time over about 10 minutes. But I am concerned about the laser warming the photodiode and thus influencing the measurement. Do you have any suggestions--i.e. is there a temperature monitor on these photodiodes I could simultaneously monitor? Also, is there some plot of dark noise vs. temperature?
jvigroux  (posted 2013-07-22 11:27:00.0)
a response from Julien at Thorlabs: thank you for your feedback! the S120C only contain a resistive sensor to ensure that they are not overheating but cannot log the temperature directly. we offer a small USB temeprature logger (TSP01) that can be used in conjuncction with the power meter lines to log the temperature of the sensor over time. The requirement for such an external temperature logge rin this type of application is of course related to the incoming optical power. I will contact you directly to see which optin is the msot suited to your requirements.
pt_tanyingjie  (posted 2013-06-19 04:37:51.34)
I need to insert some labview source codes of PM100A/D into another measurement labview program. In the program, I need the power meter to set the wavelength of a monochromatic light, then measure the light intensity, meanwhile, save the wavelength value, light intensity into a file. Then, go to the next wavelength monochromatic light, then PM100 set this wavelength, measure the intensity,and so on. The problem I encountered is, the labview source codes in the USB in the package(or from the Thorlabs webpage)cannot work. PM100 has no response to these labview source codes.(e.g. set wavelength). And many of them are bad subVIs.(e.g.PM100-PM200 Utility). So could you help me with it? Thank you very much again!
tschalk  (posted 2013-06-20 09:22:00.0)
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. The software which can be downloaded from our homepage (https://www.thorlabs.com/software_pages/ViewSoftwarePage.cfm?Code=PM100x) contains the sub VIs necessary to access all of the functions which you require for your software. The LabVIEW Library is located in the folder: C://Program Files/National Instruments/LabVIEW X(latest version on your pc)/instr.lib/PM100D. You can access the individual functions through the function panel of LabVIEW: Instrument I/O -> Instrument Drivers -> PM100D. Two important functions to get a response from the power meter are the PM100D Initialize.vi and the PM100D Close.vi. The device must be initialized before you can use the other functions to control the power meter. At the end of the program the device must be closed. If you don't use the initialization and closing there will be problems with getting any response from the device. I will contact you directly for more detailed information.
user  (posted 2013-06-18 06:22:41.263)
We have a PM100D and a S150C sensor. The sensor is specified to have a resolution of 10pW, yet the numeric view does not display any digits below 0.1nW. The statistics view and the PC utility have enough digits to display 10pW and below, so the information must be there. Is there any way to make the numeric view display more digits with the S150C?
tschalk  (posted 2013-06-19 11:50:00.0)
This is a response from Thomas at Thorlabs. The display of the PM100D has 4 digits which is unfortunately not configurable. The highest resolution is then 100pW. If you want to archive higher resolution you can use the statistics screen or a connection to the computer. When using the console remotely, you are able to achieve a resolution of 1pW.
tttang  (posted 2013-03-13 09:32:44.11)
We have a PM100D with firmware v1.1.0. It can not be updated to newest firmware. The firmware upload is enable. We can update the other PM100D with newer version(v2.xx) successfully. Would you be able to help us? Does it need other steps to do that?
jvigroux  (posted 2013-04-02 11:52:00.0)
a resposne from Julien at Thorlabs: Thank you for your feedback. This normally should not happen. I will contact you directly to help with the troubleshooting
jacekgol  (posted 2013-02-28 08:24:21.04)
A response from Julien at Thorlabs: thank you for your answer. Can not I use the USB interface to the PC (~1kHz sample rate)?
jvigroux  (posted 2013-03-04 08:41:00.0)
A response from Julien at Thorlabs: you could use the USB logging software but please keep in mind that the sample rate is not fixed and will depend on your computer also. This means that you could possibly, based on your setup have a sample rate (when using the logging software) of a few 100Hz. This in turns means that you would have only a few point per laser cycle, which could potentially be a problem.
jvigroux  (posted 2013-02-28 07:52:00.0)
a response from Julien at Thorlabs: Thank you for your inquiry. The display of the PM100D has a refresh rate of 20Hz so that you will not be able to follow your 100Hz directly on the display. When setting the bandwidth to "high", you should however be able to see your signal both when using the logging program (~1kHz sample rate) or the analog output (100kHz bandwidth maximum). for modulation frequency at 1kHz, the only option is to use the analog output.
jvigroux  (posted 2012-11-15 10:05:00.0)
A response from Julien at Thorlabs: thank you for your inquiry. The S314C can withstand temperatures (constant operation) up to 85°. The lower limit of the temperature range is 0°.
edulgergil  (posted 2012-11-15 14:42:02.08)
Is there any operating temperature range for S314C thermal power head in order to get best efficiency?
jvigroux  (posted 2012-06-20 08:14:00.0)
A response from Julien at Thorlabs: Thank you for your feedback! The limitation of the data rate accessible through the software is to some extent limited by the software architecture. We are currently in the process of modifying the PM100 utility so as to allow the maximum possible sample rate (~1kS/s, hardware limited). We will release a beta version containing this feature at the beginning of the next week.
sebastien.du.tremblay  (posted 2012-06-17 22:25:59.0)
Hi, We bought a PM100D with a S130C sensor last month. We are trying to quantify the power output (mW) of a blue DPSS laser sending 5 ms pulses using the PM100 utilities software. We are unable to achieve sufficient sampling rate with this software, even when setting averaging to minimum (i.e. 1) and interval between samples to zero. In that case, we obtain about 35 samples/sec (and a noisy signal). We would like to achieve a better sampling rate using this software (i.e. 3Ksamples/sec). Any suggestions ? Thanks !
tcohen  (posted 2012-05-25 09:47:00.0)
Response from Tim at Thorlabs: Thank you for using our feedback tool! This happens if the console is in “Relative Measurement” operation mode. In this mode, the left and right sub-menus are fixed and used for “Ref” power and “P” current power, while the main display shows the difference with a + or – sign. If you push the delta “?” button to return to normal measurement mode, the sub menus will again be programmable.
user  (posted 2012-05-24 18:26:27.0)
I have two Thorlab meters, one of them I am able to set the right sub menu to µW/cm^2. The other Thorlabs meter does not allow me to do this through the menu commands. Have any of you encountered this before ?
tcohen  (posted 2012-02-22 10:43:00.0)
Response from Tim at Thorlabs to dayong-zhou: By clicking the "Software" tab on this webpage and clicking the link provided you can download the software that comes with the PM100D. When unzipped, look for the file named "Source Distribution" which will contain all of the .vi files. For convenience, the link is: http://www.thorlabs.com/software/MUC/PM100x/Software/Remote_Control_Application/PM100D-PM200_Utility_V4.0.zip
dayong-zhou  (posted 2012-02-21 23:23:17.0)
Just cannot find the LabVIEW examples mentioned in the Operation Manual for PM100D either in onlion Thorlabs softwares or in the attached SD stick. Could you email me these LabVIEW example programs? Thank you, D
jvigroux  (posted 2011-12-27 09:23:00.0)
A response form Julien at Thorlabs: Thank your for your feedback. This file is indeed missing from the example folder. I am sorry for the resulting inconvenience. We will add this file immediately.
seberangjeli  (posted 2011-12-26 22:43:00.0)
I bought PM100D recenty and now trying to use Labview program, but the main program ask for PM100D_Open.vi file which is not included with Thorlabs USB drive. Could you please send me the file? Thanks. Shahnan
jjurado  (posted 2011-08-02 11:16:00.0)
Response from Javier at Thorlabs to kging: Thank you very much for contacting us. The sampling rate of our PM100xxx power meters is 3000 samples/sec. This is the internal sampling rate of the console. Using the software, you can set up averaging, which is the number of measurements to be averaged, resulting in 1 measurement sample. You can also configure a number of samples to be taken and displayed, as well as an interval time between two averaging operations.
kqing  (posted 2011-07-29 15:56:48.0)
Whats the sampling rate? Thanks. K
lsy  (posted 2011-04-01 00:56:05.0)
Suddenly, Our PM100D cant recognize S121C. I think there is no problem with S121C, cause our other device can identify the sensor. PM100D indicates the sensor as "PD Adapter". Whats the problem? F.W version is V2.2 Plz help us. Regards Sungyong lee
jjurado  (posted 2011-02-09 17:48:00.0)
Response from Javier at Thorlabs to ren_mengxin: Thank you very much for submitting your inquiry. All the C series sensors, including the S120VC, are compatible with the PM100D.
ren_mengxin  (posted 2011-02-09 19:14:23.0)
Is sensor S120VC compatible with console PM100D? We have gotten PM100D and want another sensor.
tor  (posted 2010-11-15 08:57:40.0)
A response to Vishal from Tor at Thorlabs: Thank you for your interest in our photodiode sensors. The measurement ranges, in watts, for our C-series photodiode sensors are shown below on this page. Please do not hesitate to contact me at techsupport@thorlabs.com if youd like some assistance selecting an appropriate sensor for your application.
vishals  (posted 2010-11-15 02:23:20.0)
Pls send photodiode measurement range in watt unit. vishal sakarvadiya vishals@sac.isro.gov.in
Thorlabs  (posted 2010-08-18 09:04:39.0)
Response from Javier at Thorlabs to Paulo Santos: Thank you very much for your feedback. The software drivers for the PM100 and PM100D power meters are not compatible. They were developed using different protocols, which makes control with a single program not possible.
santos  (posted 2010-08-17 10:35:48.0)
We have PM100 and PM100D power meters, which we would like to control with a single program. I would like to know if the drivers for the new model PM100D also work for the old model PM100. Thanks in advance, Paulo Santos
Thorlabs  (posted 2010-07-15 11:48:29.0)
Response from Javier at Thorlabs to last poster: thank you for your feedback. We are currently in the process of evaluating the power rating specifications for all our sensors. We will update all the values on the web shortly.
user  (posted 2010-07-13 23:51:32.0)
teh overview tab says "100 pW to 250 W" but the strongest sensor goes to 200W
apalmentieri  (posted 2010-03-03 09:10:19.0)
A response from Adam to Thorlabs to jpwilde: We have added this file to the software and emailed you a copy of the complete vi folder. This file is included in the folder that was sent out to you.
jpwilde  (posted 2010-03-02 18:48:44.0)
I recently purchased the PM100D (actually, the PM130D) and tried loading the LabView utility software application. I program in LabView and would like to use your source code. However, the main utility code (PM100D Utility.vi) is looking for a sub-VI that was not included with the source code. Can you please send me: PM100D_Open.vi ? Thanks, Jeff Wilde 408-828-3296
apalmentieri  (posted 2010-01-29 11:20:56.0)
A response from Adam at Thorlabs to ctrao2000: I will contact you directly to find the exact instruments that will suit your requirements.
ctrao2000  (posted 2010-01-29 03:05:11.0)
i needs some optical instruments for Ha noi university ò technology
klee  (posted 2009-12-07 11:08:45.0)
A response from Ken at Thorlabs to ag: With the PM100D, you can easily access the wavelength menu by pressing the wavelength key. The menu offers 8 individually configurable sensor independent wavelength settings. To edit a wavelength keep the OK key pressed for 1 second. Set the desired wavelength with the arrow keys.
ag  (posted 2009-12-04 11:07:37.0)
One of the most annoying things about the old version was the huge number o key presses required to change the wavelength, does this do any better? Nice to have a USB interface but it doesnt mention Mac or Linux...
klee  (posted 2009-09-04 16:48:27.0)
A response from Ken at Thorlabs to cye: You will be receiving a quote from our sales deparment shortly.
cye  (posted 2009-09-04 15:27:43.0)
Please send quotation for PM100D S121C Thanks, My information: Chianping Ye, PhD Division of Endocrinology BIDMC & Harvard Medical School 330 Brookline Ave E/CLS 7, 720 Boston, MA 02215 Telephone: 617-735-3353 Fax: 617-735-3323
jhartmann  (posted 2009-07-09 11:13:55.0)
A response from Juergen at Thorlabs to charlesholbrow : There is no exposure time control for photo diode sensors like S120C - the photo diode delivers a current, proportional to optical power. The required averaging is possible - see also manual, sction 4.2.6 "Statistics Display"
charlesholbrow  (posted 2009-07-07 12:22:51.0)
Is it possible to reduce the repetition rate of the meters reading? Is it possible to increase the exposure time of the connected photo diode? I am using a S120C photo Diode sensor. Ideally, I would like to be able to press a button on the meter and display the average value recorded by the meter over the next second.
klee  (posted 2009-06-26 17:42:13.0)
A response from Ken at Thorlabs to ondine.suavet: You will need to use it with a sensor head that can measure 345nm, for example the S120VC or S130VC. Then you will need to make the wavelength correction for 345nm. For more details, please refer to the operating manual, which can be downloaded under the Documents and Drawings tab.
ondine.suavet  (posted 2009-06-26 17:01:33.0)
I would like to know if I can select the wavelength (340nm in my case)where the UV intensity is measured? Thank you very much. Regards, Ondine
ondine.suavet  (posted 2009-06-26 17:00:19.0)
I would like to know if I can select the wavelength (340nm in my case)where the UV intensity is measured? Thank you very much. Regards, Ondine
ondine.suavet  (posted 2009-06-26 16:59:48.0)
I would like to know if I can select the wavelength (340nm in my case)where the UV intensity is measured? Thank you very much. Regards, Ondine
Greg  (posted 2009-03-31 07:18:13.0)
A response from Greg at Thorlabs to cslim: A member of our Technical Support group will send you the software ASAP. I apologize that we do not have this on our website already. We are working on adding it to the download section of our website (gray bar at top: Service -> Download).
cslim  (posted 2009-03-29 01:16:56.0)
We bought the thorlabs PM100D power meter but lost the CD. May I know where I can download the content in the CD? Regards, winston.
Laurie  (posted 2009-03-06 16:23:31.0)
Response from Laurie at Thorlabs to andyh: Thank you for your interest in our power and energy meters. Someone from our technical support staff will contact you shortly to offer a solution.
andyh  (posted 2009-03-06 14:42:51.0)
We just bought the old style meter (~2 months ago) along with a slim cell sensor and thermal sensor. It appears now that we cannot get a second meter of the style that would fit our current sensor cells. Is that correct? What would the cost be to change the connectors to the current style on our 2 sensor? We are interested in having two meter and sensors that are interchangeable. It looks like your product revisions have prevented us from achieving this. What are our options?

Thorlabs offers a wide selection of power and energy meter consoles, ranging from the touch screen PM400 to the analog PM100A. Key specifications of all of our power meter consoles are presented below to help you decide which device is best for your application. We also offer self-contained wireless power meters.

When used with our C-series sensors, Thorlabs' power meter consoles recognize the type of connected sensor and measure the current or voltage as appropriate. Our C-series sensors have responsivity calibration data stored in their connectors. The console will read out the responsivity value for the user-entered wavelength and calculate a power or energy reading.

  • Photodiode sensors deliver a current that depends on the input optical power and the wavelength. The current is fed into a transimpedance amplifier, which outputs a voltage proportional to the input current. The photodiode's responsivity is wavelength dependent, so the correct wavelength must be entered into the console for an accurate power reading. The console reads out the responsivity for this wavelength from the connected sensor and calculates the optical power from the measured photocurrent.
  • Thermal sensors deliver a voltage proportional to the input optical power. Based on the measured sensor output voltage and the sensor's responsivity, the console will calculate the incident optical power.
  • Energy sensors are based on the pyroelectric effect. They deliver a voltage peak proportional to the pulse energy. If an energy sensor is recognized, the console will use a peak voltage detector and the pulse energy will be calculated from the sensor's responsivity.

The sensors are also capable of displaying the current or voltage delivered by the sensor. Alternatively, a current or voltage equivalent to the measured value is provided at the analog output.

Item # PM100A PM100D PM100USB PM200 PM400 PM320E
(Click Photo to Enlarge) PM100A PM100D PM100USB PM200 PM400 PM320E
Description Analog Power Meter Console Digital Power and Energy Meter Console USB Power and Energy Meter Interface Touchscreen Power and Energy Meter Console Touchscreen Power and Energy Meter Console with Multi-Touch Dual-Channel Benchtop Power and Energy Meter Console
Compatible Sensors Photodiode and Thermal Photodiode, Thermal, and Pyroelectric
Housing Dimensions
(H x W x D)
7.24" x 4.29" x 1.61"
(184 mm x 109 mm x 41 mm)
7.09" x 4.13" x 1.50"
(180 mm x 105 mm x 38 mm)
3.67" x 2.38 " x 1.13"
(93.1 mm x 60.4 mm x 28.7 mm)
6.70" x 4.93" x 1.48"
(170.2 mm x 125.1 mm x 37.5 mm)
5.35" x 3.78" x 1.16"
(136.0 mm x 96.0 mm x 29.5 mm)
4.8" x 8.7" x 12.8"
(122 mm x 220 mm x 325 mm)
Channels 1 2
External Temperature Sensor Input
(Sensor not Included)
- - - - Instantaneous Readout and Record Temperature Over Time -
External Humidity Sensor Input (Sensor not Included) - - - - Instantaneous Readout and  Record Humidity Over Time -
GPIO Ports - 4, Programmable 4, Programmable -
Source Spectral Correction - - - Yes! Yes! -
Attenuation Correction - - - Yes! Yes! -
External Trigger Input - - -  yes -  yes
Display
Type Mechanical Needle and LCD Display with Digital Readout 320 x 240 Pixel Backlit Graphical LCD Display No Built-In Display
Controlled via GUI for PC
Resistive Touchscreen with Color Display Protected Capacitive Touchscreen with Color Display 240 x 128 Pixels
Graphical LCD Display
Dimensions Digital: 1.9" x 0.5"
(48.2 mm x 13.2 mm)
Analog: 3.54" x 1.65"
(90.0 mm x 42.0 mm)
3.17" x 2.36"
(81.4 mm x 61.0 mm)
- 4.65" x 3.48"
(118.0 mm x 88.5 mm)
3.7" x 2.1"
(95 mm x 54 mm)
3.7" x 2.4"
(94.0 mm x 61.0 mm)
Refresh Rate 20 Hz Dependent on PC and Settingsa 100 Hz 10 Hz (Numerical)
25 Hz (Analog Simulation)
20 Hz
Measurement Viewsb
Numerical yes yes Requires PCc yes yes
Mechanical Analog Needle yes - - - - -
Simulated Analog Needle - yes Requires PCc yes Yes! yes
Bar Graph - yes Requires PCc yes Yes! yes
Trend Graph - yes Requires PCc yes Yes! Yes!
Histogram - yes Requires PCc - - Yes!
Statistics Yes! yes Requires PCc yes Yes! yes
Memory
Type - SD Card - NAND Flash NAND Flash -
Size - 2 GB - 128 MB 4 GB -
Power
Battery LiPo 3.7 V 1300 mAh - LiPo 3.7 V 2600 mAh LiPo 3.7 V 2600 mAh -
External 5 VDC via USB or Included AC Adapter 5 VDC via USB 5 VDC via Included Power Supply 5 VDC via USB Selectable Line Voltage: 100 V, 115 V, 230 V (±10%)
  • Up to 300 Hz. The refresh rate is limited by the PC used to operate the PM100USB power meter interface, as it does not have a built in display.
  • These are the measurement views built into the unit. All of our power meter consoles except the PM320E can be controlled using the Optical Power Monitor software package. The PM320E has its own software package.
  • The PM100USB power meter interface does not have a built-in monitor, so all data must be displayed through a PC running the Optical Power Meter Software.

Digital Optical Power and Energy Meter

  • Compact, Handheld, Power and Energy Meter Console
  • Large 4" LCD Screen
  • Long-Life Internal Li-Polymer Battery
  • 2 GB SD Memory Card for Data Storage
  • Console is Calibrated and Includes Certificate of Calibration
  • 1 GB USB Memory Stick with Software including LabVIEW™ and LabWINDOWS™ /CVI Driver Set, and Operating Manual
  • Hard Case to Store the Console and One Sensor

Please note that sensors are not included with the PM100D console. For information about our compatible sensors, please see the sensor descriptions below. Thorlabs does offer a variety of Power Meter Kits with the PM100D Console bundled with several of our most popular sensors. Please visit our Power Meter Kits page for more details.

A recalibration service is available for the PM100D; contact Tech Support for details. Alternatively, if you have a corresponding sensor that needs recalibrating, you can include the PM100D with the sensor for recalibration at no additional cost. To order this service, scroll to the bottom of the page and select the appropriate Item # that corresponds to your sensor.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
PM100D Support Documentation
PM100DCompact Power and Energy Meter Console, Digital 4" LCD
$1,075.08
Today

Standard Photodiode Power Sensors

S120C and quick release 30mm Cage System
Click to Enlarge
S120C and CP90F Quick-Release Mount
  • For General Purpose Optical Power Measurements
  • Integrated Viewing Target for Easy Sensor Alignment
  • Ø9.5 mm Sensor Aperture
  • Sensor, Protective Cap, IR Target, and Thread Adapter Included
  • Fiber Adapters Available Separately (See Table Below)
  • See the Full Web Presentation for More Information

These Standard Photodiode Power Sensors are ideal for metering low power coherent and incoherent sources from the UV to the NIR. Each NIST-Traceable, calibrated sensor features an integrated viewing target for easy alignment, enhanced shielding against electromagnetic interference, an over-temperature-alert device, and a large Ø9.5 mm sensor aperture. The sensors are compatible with 30 mm cage systems, Ø1/2" posts, and SM1 (1.035"-40) lens tubes, and are ideal for free-space and fiber-coupled sources.

Thorlabs offers a recalibration service for these photodiode power sensors, which can be ordered below (see Item # CAL1 for Si sensors and Item # CAL2 for Ge sensors).

Item #a S120VC S120C S121C S122C
Sensor Image
(Click the Image to Enlarge)

S120VC

S120C

S121C

S122C

Aperture Size Ø9.5 mm
Wavelength Range 200 - 1100 nm 400 - 1100 nm 400 - 1100 nm 700 - 1800 nm
Power Range 50 nW - 50 mW 500 nW - 500 mW 50 nW - 40 mW
Detector Type Si Photodiode (UV Extended) Si Photodiode Ge Photodiode
Linearity ±0.5%
Resolutionb 1 nW 10 nW 2 nW
Measurement Uncertaintyc ±3% (440 - 980 nm)
±5% (280 - 439 nm)
±7% (200 - 279 nm,
981 - 1100 nm)
±3% (440 - 980 nm)
±5% (400 - 439 nm)
±7% (981 - 1100 nm)
±5%
Responsivityd (Click for Plot)
Raw Data

Raw Data

Raw Data

Raw Data
Coating/Diffuser Reflective ND (OD1.5)e Reflective ND (OD1)f Reflective ND (OD2)g Absorptive ND (Schott NG9)
Head Temperature Measurement NTC Thermistor 4.7 kΩ
Housing Dimensions Ø30.5 mm x 12.7 mm
Cable Length 1.5 m
Post Mountinge,f,g Universal 8-32 / M4 Tap, Post Not Included
Aperture Thread External SM1 (1.035"-40)
Compatible Fiber Adapters S120-FC, S120-SMA, S120-ST, S120-LC, and S120-SC (Not Included)
Compatible Consoles PM400, PM200, PM100D, PM100A, PM100USB, and PM320E
  • For complete specifications, please see the Specs tab here.
  • Measured with PM100D console in low bandwidth setting.
  • Beam diameter > 1 mm.
  • All sensor responsivities are calibrated to a NIST-traceable source with measurements taken in 5 nm intervals.
  • For the S120VC, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had a reflective ND diffuser (OD1). Additionally, they came with an 8-32 tap and M4 adapter. For additional information, please contact technical support.
  • For the S120C, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had an absorptive ND diffuser (Schott NG3). Additionally, they came with an 8-32 tap and M4 adapter. For additional information, please contact technical support.
  • For the S121C, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had a absorptive ND diffuser (Schott NG9). Additionally, they came with an 8-32 tap and M4 adapter. For additional information, please contact technical support.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
S120VC Support Documentation
S120VCStandard Photodiode Power Sensor, Si, 200 - 1100 nm, 50 mW
$424.32
Today
S120C Support Documentation
S120CStandard Photodiode Power Sensor, Si, 400 - 1100 nm, 50 mW
$306.00
Today
S121C Support Documentation
S121CStandard Photodiode Power Sensor, Si, 400 - 1100 nm, 500 mW
$332.52
Today
S122C Support Documentation
S122CStandard Photodiode Power Sensor, Ge, 700 - 1800 nm, 40 mW
$610.98
5-8 Days

Slim Photodiode Power Sensors


Click to Enlarge
View Imperial Product List
Item #QtyDescription
Imperial Product List
S130C1Slim Photodiode Power Sensor, Si, 400 - 1100 nm, 500 mW
CP022SM1-Threaded 30 mm Cage Plate, 0.35" Thick, 2 Retaining Rings, 8-32 Tap
TR61Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 6"
ER6-P43Cage Assembly Rod, 6" Long, Ø6 mm, 4 Pack
CM1-BS013130 mm Cage Cube-Mounted Non-Polarizing Beamsplitter, 400 - 700 nm, 8-32 and M4 Adapters
View Metric Product List
Item #QtyDescription
Metric Product List
S130C1Slim Photodiode Power Sensor, Si, 400 - 1100 nm, 500 mW
CP02/M2SM1-Threaded 30 mm Cage Plate, 0.35" Thick, 2 Retaining Rings, M4 Tap
TR150/M1Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 150 mm
ER6-P43Cage Assembly Rod, 6" Long, Ø6 mm, 4 Pack
CM1-BS013130 mm Cage Cube-Mounted Non-Polarizing Beamsplitter, 400 - 700 nm, 8-32 and M4 Adapters
S130C Sensor in a 30 mm Cage

Click for Details

SM1A29 SM1 Thread Adapter
Mounted on a S130C Sensor

Click for Details
View Product List
Item #QtyDescription
Universal Product List
S130C1Slim Photodiode Power Sensor, Si, 400 - 1100 nm, 500 mW
FB-511Single-Axis FiberBench, L = 51 mm, 5 Positions
FBSM1FiberBench Mount for Slim Photodiode Sensors
HCA3-SM11FiberBench Wall Plate, FiberPort Compatible, Internally SM1-Threaded
PAF-X-5-B1FiberPort, FC/PC & FC/APC, f=4.6 mm, 600 - 1050 nm, Ø1.00 mm Waist
FBR-LPVIS1Rotating Linear Polarizer Module, 500 - 720 nm, Ø2.5 mm CA
S130C Photodiode Sensor Mounted in FiberBench System Using FBSM Mount
  • For Optical Power Measurements in Confined Spaces
  • Very Slim Design: 5 mm Thin on Sensor Side
  • Ø9.5 mm Sensor Aperture
  • Slideable ND Filter Automatically Changes Sensor Power Range
  • Optional SM1A29 Adapter with VIS/IR Target and External SM1 Threading (More Details)
  • Optional FBSM Mount with VIS/IR Target for FiberBench Systems (More Details)
  • See the Full Web Presentation for More Information

These Slim Photodiode Power Sensors are designed to take optical source power measurements in locations where space and accessibility are at a premium. The 5 mm thin sensor end can fit between closely spaced optics, cage systems, and other arrangements where standard power meters may not fit. The NIST-Traceable, calibrated sensors also feature a large Ø9.5 mm sensor aperture and slideable neutral density filter for dual power ranges in one compact device.

A separately available SM1A29 adapter can be attached by 2 setscrews to any S130 series power sensor to mount fiber adapters, light shields, filters or any other SM1-threaded (1.035"-40) mechanics or optics. The FBSM Mount allows our S130 series power sensors to be mounted vertically into FiberBench systems for stable mounting with a minimal footprint.

Thorlabs offers a recalibration service for these photodiode power sensors, which can be ordered below (see Item # CAL-S130 for Si sensors and Item # CAL-S132 for Ge sensors).

Item #a S130VC S130C S132C
Sensor Image
(Click the Image to Enlarge)

S130VC

S130C

S132C

Aperture Size Ø9.5 mm
Wavelength Range 200 - 1100 nm 400 - 1100 nm 700 - 1800 nmb
Power Range
(with Filter)
500 pW - 0.5 mWc
(Up to 50 mW)c
500 pW - 5 mW
(Up to 500 mW)
5 nW - 5 mW
(Up to 500 mW)
Detector Type Si Photodiode (UV Extended) Si Photodiode Ge Photodiode
Linearity ±0.5%
Resolution 100 pWd 1 nWe
Measurement Uncertaintyf ±3% (440 - 980 nm)
±5% (280 - 439 nm)
±7% (200 - 279 nm, 981 - 1100 nm)
±3% (440 - 980 nm)
±5% (400 - 439 nm)
±7% (981 - 1100 nm)
±5%
Responsivityg (Click for Plot)
Raw Data

Raw Data

Raw Data
Coating/Diffuser Reflective ND (OD1.5)c Reflective ND (OD2)h Absorptive ND (Schott NG9/KG3)b
Housing Dimensions 150 mm x 19 mm x 10 mm; 5 mm Thickness on Sensor Side
Cable Length 1.5 m
Post Mounting 8-32 and M4 Taps
Adapters (Not Included) SM1A29: Add SM1 Thread and Viewing Target to Aperture
Fiber Adapters Compatible with SM1A29 Adapter: S120-FC, S120-SMA, S120-ST, S120-LC, and S120-SC
FBSM: Integrate Sensor into FiberBench Setups
Compatible Consoles PM400, PM200, PM100D, PM100USB, PM100A, and PM320E
  • For complete specifications, please see the Specs tab here.
  • For the S132C, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had a reflective ND diffuser (OD1), which would decrease the wavelength range from 700 nm to 1800 nm to 1200 nm to 1800 nm. For additional information, please contact technical support.
  • For the S130VC, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had an optical power range of 5 nW to 5 mW (50 nW to 50 mW with filter) and a reflective ND diffuser (OD1). For additional information, please contact technical support.
  • Measured with PM100D console in low bandwidth setting, without filter.
  • Measured with PM100D console in low bandwidth setting at 1550 nm, without filter.
  • Beam Diameter > 1 mm.
  • All sensor responsivities are calibrated to a NIST-traceable source with measurements taken in 5 nm intervals.
  • For the S130C, these specifications are valid for devices with serial numbers 1203xxx or higher. Older versions had an absorptive ND diffuser (Schott NG9). For additional information, please contact technical support.
SM1A29 is an adapter that can be attached by 2 set screws to any S130 series power sensor. This gives the possibility to mount fiber adapters, light shields, filters or any other SM1 threaded mechanics or optics.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
S130VC Support Documentation
S130VCSlim Photodiode Power Sensor, Si, 200 - 1100 nm, 50 mW
$616.08
Today
S130C Support Documentation
S130CSlim Photodiode Power Sensor, Si, 400 - 1100 nm, 500 mW
$508.98
Today
S132C Support Documentation
S132CSlim Photodiode Power Sensor, Ge, 700 - 1800 nm, 500 mW
$723.18
Today
SM1A29 Support Documentation
SM1A29Customer Inspired! SM1 Thread Adapter for Slim Photodiode Sensors
$42.08
Today
FBSM Support Documentation
FBSMFiberBench Mount for Slim Photodiode Sensors
$41.82
Today

Microscope Slide Photodiode Power Sensor

Item #a S170C
Sensor Image
(Click Image to Enlarge)
S170C Microscope Slide Power Head
Overall Dimensions 76.0 mm x 25.2 mm x 5.0 mm
(2.99" x 0.99" x 0.20")
Active Detector Area 18 mm x 18 mm
Input Aperture 20 mm x 20 mm
Wavelength Range 350 - 1100 nm
Optical Power Working Range 10 nW - 150 mW
Detector Type Silicon Photodiode
Linearity ±0.5%
Resolutionb 1 nW
Calibration Uncertaintyc ±3% (440 - 980 nm)
±5% (350 - 439 nm)
±7% (981 - 1100 nm)
Responsivityd (Click for Plot) Typical Responsivity
Raw Data
Neutral Density Filter Reflective (OD 1.5)
Cable Length 1.5 m
Post Mounting Universal 8-32 / M4 Tap, Post Not Included
Compatible Consoles PM400, PM200, PM100D,
PM100USB, PM100A, and PM320E
  • For complete specifications, please see the Specs tab here.
  • Measured with PM100D console in low bandwidth setting.
  • Beam diameter > 1 mm.
  • All sensor responsivities are calibrated to a NIST-traceable source with measurements taken in 5 nm intervals.
  • Wavelength Range: 350 nm to 1100 nm
  • Sensitive to Optical Powers from 10 nW to 150 mW
  • Designed to Measure Optical Power at the Sample Plane of a Microscope
  • Silicon Photodiode with Large 18 mm x 18 mm Active Area
  • Sensor Housing Dimensions: 76.0 mm x 25.2 x 5.0 mm
  • Index Matching Gel Utilized in Design to Prevent Internal Reflections
  • Information Stored in Connector
    • Sensor Data
    • NIST- and PTB-Traceable Calibration Data
  • Post Mountable via 8-32 (M4) Tap

The S170C Microscope Slide Power Sensor Head is a silicon photodiode sensor designed to measure the power at the sample in microscopy setups. The silicon photodiode can detect wavelengths between 350 nm and 1100 nm at optical powers between 10 nW and 150 mW. The sensor head's 76.0 mm x 25.2 mm footprint matches that of a standard microscope slide and is compatible with most standard upright and inverted microscopes.

The photodiode has an 18 mm x 18 mm active area and is contained in a sealed housing behind a neutral density (ND) filter with OD 1.5. A 20 mm x 20 mm indentation around the surface of the ND filter is sized to accept standard microscope cover slips. An immersion medium (water, glycerol, oil) may be placed in this well directly over the ND filter, or a cover slip may be inserted first to simplify clean up. The gap between the photodiode and the neutral density filter has been filled with an index matching gel in order to prevent internal reflections from causing significant measurement errors when using high NA objectives with oil or water.

The bottom of the sensor housing features a laser-engraved grid to aid in aligning and focusing the beam. In standard microscopes, this grid can be used for beam alignment before flipping the sensor head to face the objective for power measurements. In inverted microscopes, turn on the transmitted illuminator to align the grid on the detector housing with the beam, thereby centering the sensor in front of the objective. Alternatively, the diffusive surface of the ND filter can be used as a focusing plane.

Sensor specifications and the NIST- and PTB-traceable calibration data are stored in non-volatile memory in the sensor connector and can be read out by the latest generation of Thorlabs power meters. We recommend yearly recalibration to ensure accuracy and performance. Calibration may be ordered using the CAL1 recalibration service available below. Please contact technical support for more information.

Thorlabs also offers a Microscope Slide Sensor Head with a thermal sensor; for complete specifications, the full presentation can be found here.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
S170C Support Documentation
S170CCustomer Inspired! Microscope Slide Power Sensor, 350 - 1100 nm, 150 mW
$1,137.30
Today

Microscope Slide Thermal Power Sensor

Item #a S175C
Sensor Image
(Click Image to Enlarge)
Microscope Thermal Sensor
Active Detector Area 18 mm x 18 mm
Wavelength Range 0.3 - 10.6 µm
Power Range 100 µW - 2 W
Detector Type Thermal Surface Absorber (Thermopile)
Linearity ±0.5%
Resolutionb 10 µW
Measurement Uncertaintyc ±3% @ 1064 nm;
±5% @ 300 nm - 10.6 µm
Response Time 3 s
(<2 s from 0 to 90%)
Housing Dimensions 76 mm x 25.2 mm x 4.8 mm
(2.99" x 0.99" x 0.19") 
Cable Length 1.5 m
Housing Features Integrated Glass Cover
Engraved Laser Target on Back
Post Mounting N/A
Cage Mounting N/A
Aperture Thread N/A
Compatible Consoles PM400, PM200, PM100D, PM100USB, PM100A, and PM320E
  • For complete specifications, please see the Specs tab here.
  • Measured with PM200 Touch Screen Console
  • Beam Diameter: >1 mm

Click to Enlarge
Typical absorption curve for the S175C (glass and absorber). Note that this curve is representative, and the actual absorption across the spectrum will vary from unit to unit.
Microscope Thermal Sensor
Click to Enlarge

The back of the S175C housing is engraved with the sensor specifications and a target for centering the beam on the sensor.
  • Wavelength Range: 300 nm - 10.6 µm
  • Sensitive to Optical Powers from 100 µW to 2 W
  • Designed to Measure Optical Power in the Sample Plane of a Microscope
  • Thermal Sensor with 18 mm x 18 mm Active Area
  • 76.0 mm x 25.2 mm Footprint Matches Standard Microscope Slides
  • Information Stored in Connector
    • Sensor Data
    • NIST- and PTB-Traceable Calibration Data
  • See the Full Web Presentation for More Information

The S175C Microscope Slide Thermal Power Sensor Head is designed to measure the power at the sample in microscopy setups. The thermal sensor can detect wavelengths between 300 nm and 10.6 µm at optical powers between 100 µW and 2 W. The sensor head's 76.0 mm x 25.2 mm footprint matches that of a standard microscope slide and is compatible with most standard upright and inverted microscopes.

The thermal sensor has an 18 mm x 18 mm active area and is contained in a sealed housing behind a glass cover. An immersion medium (water, glycerol, oil) may be placed over the glass cover plate.

As seen in the image to the right, the bottom of the sensor housing features a laser-engraved target to aid in aligning and focusing the beam. In standard microscopes, the target can be used for beam alignment before flipping the sensor head to face the objective for power measurements. In inverted microscopes, turn on the trans-illumination lamp and align the target on the detector housing with the beam; this will center the sensor in front of the objective.

Sensor specifications and the NIST- and PTB-traceable calibration data are stored in non-volatile memory in the sensor connector and can be read out by the latest generation of Thorlabs power meters. We recommend yearly recalibration to ensure accuracy and performance. Calibration may be ordered using the CAL-S200 recalibration service available below. Please contact technical support for more information.

Thorlabs also offers a Microscope Slide Sensor Head with a photodiode sensor for low-power, high-resolution measurements; the full presentation may be found here.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
S175C Support Documentation
S175CCustomer Inspired! Microscope Slide Thermal Power Sensor, 300 nm - 10.6 µm, 2 W
$1,137.30
Today

Integrating Sphere Photodiode Power Sensors

S142C and S140-BFA Bare Fiber Adapter
Click to Enlarge
S142C and S140-BFA Bare Fiber Adapter (Sold Separately)
S142C and S120-FC Fiber Adapter
Click to Enlarge

S142C with the S120-FC Fiber Adapter (Included)
  • For Measurements Independent of Beam Shape and Entrance Angle
  • Integrating Sphere Design Acts as a Diffuser with Minimal Power Loss
  • Ø5 mm, Ø7 mm, or Ø12 mm Input Aperture
  • Removable S120-FC Fiber Adapter (FC/PC and FC/APC) Included
  • Compatible Fiber Adapters for Terminated and Bare Fiber (See Table Below)
  • See the Full Web Presentation for More Information

These Integrating Sphere Photodiode Power Sensors are the ideal choice for power measurements independent of beam uniformity, divergence angle, beam shape, or entrance angle, making them excellent for use with fiber sources and off-axis free space sources.

Our integrating spheres are designed for wavelength ranges from the visible through the NIR. Sensor heads for use between 350 and 2500 nm use a single Ø1" or Ø2" sphere made from Zenith® PTFE and feature a black housing to minimize reflected light around the entrance aperture. These sensors use either a silicon photodiode for detection in the 350 - 1100 nm range or an InGaAs photodiode for detection in the 800 - 1700 nm, 900 - 1650 nm, or 1200 - 2500 nm wavelength range.

The S180C integrating sphere for 2.9 - 5.5 µm uses two connected, gold-plated Ø20 mm spheres, with an entrance port in the first sphere and a port for the MCT (HgCdTe) detector located in the second sphere. Compared to single-sphere designs, the two-sphere configuration improves device sensitivity by minimizing the internal sphere surface area while still effectively shielding the detector from direct illumination. This design reduces the effect of input angle, divergence, and beam shape on the measurement result by effectively shielding the photodiode without the use of a baffle or other shielding mechanism.

The integrating spheres below feature large Ø5 mm, Ø7 mm, or Ø12 mm apertures, externally SM1-threaded (1.035"-40) front connections, enhanced shielding against electromagnetic interference, and an over-temperature alert sensor. Because of the large active detector areas of these sensors, the included S120-FC fiber adapter can be used with FC/PC- or FC/APC-terminated fiber. The externally SM1-threaded adapter can be removed using a size 1 screwdriver to place components closer to the window. NIST-traceable data is stored in the sensor connector.

Thorlabs offers a recalibration service for these photodiode power sensors, which can be ordered below. See Item # CAL1 for the S140C and S142C Si sensors; Item # CAL2 for the S144C, S145C, and S146C InGaAs sensors; and Item # CAL4 for the S148C InGaAs sensor or S180C MCT sensor.

Item #a S140C S142C S144C S145C S146C S148C S180C
Sensor Image
(Click the Image
to Enlarge)
S140C S142C S144C S145C S146C S144C Mid-IR Detector
Aperture Ø5 mm Ø12 mm Ø5 mm Ø12 mm Ø5 mm Ø7 mm
Wavelength Range 350 - 1100 nm 800 - 1700 nm 900 - 1650 nm 1200 - 2500 nm 2.9 µm - 5.5 µm
Power Range 1 µW - 500 mW 1 µW - 5 W 1 µW - 500 mW 1 µW - 3 W 10 µW - 20 W 1 µW - 1 W 1 µW - 3 W
Detector Type Si Photodiode InGaAs Photodiode MCT (HgCdTe)
Photodiode
Linearity ±0.5%
Resolutionb 1 nW 10 nW 1 nW 10 nW
Measurement
Uncertaintyc
±3% (440 - 980 nm)
±5% (350 - 439 nm)
±7% (981 - 1100 nm)
±5%
Responsivityd
(Click for Plot)

Raw Data

Raw Data

Raw Data

Raw Data

Raw Data

Raw Data

Raw Data
Integrating Sphere
Material 
(Size)
Zenith® PTFE
(Ø1")
Zenith® PTFE
(Ø2")
Zenith® PTFE
(Ø1")
Zenith® PTFE
(Ø2")
Zenith® PTFE
(Ø1")
Gold Plating
(Two Ø20 mm Spheres)
Head Temperature
Measurement
NTC Thermistor 4.7 kΩ
Housing
Dimensions
Ø45 mm x 30.5 mm 70 mm x 74 mm x 70 mm Ø45 mm x 30.5 mm 70 mm x 74 mm x 70 mm Ø45 mm x 30.5 mm 59.0 mm x 50.0 mm x
28.5 mm
Cable Length 1.5 m
Post Mounting 8-32 and M4 Taps
Aperture Thread Included Adapter with SM1 (1.035"-40) External Thread
Compatible Fiber
Adapters
S120-FC (Included)
S120-SMA, S120-ST, S120-SC, S120-LC, and S140-BFA Bare Fiber Adapter (Not Included)
Compatible Consoles PM400, PM200, PM100D, PM100USB, PM100A, and PM320E
  • For complete specifications, please see the Specs tab here.
  • Measured with PM100D console in low bandwidth setting.
  • Beam diameter > 1 mm
  • All sensor responsivities are calibrated to a NIST-traceable source with measurements taken in 5 nm intervals except for the S180C. See the S180C responsivity graph to see the NIST-traceable reference points.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
S140C Support Documentation
S140CIntegrating Sphere Photodiode Power Sensor, Si, 350 - 1100 nm, 500 mW
$702.78
Today
S142C Support Documentation
S142CIntegrating Sphere Photodiode Power Sensor, Si, 350 - 1100 nm, 5 W
$975.12
Today
S144C Support Documentation
S144CIntegrating Sphere Photodiode Power Sensor, InGaAs, 800 - 1700 nm, 500 mW
$825.18
Today
S145C Support Documentation
S145CIntegrating Sphere Photodiode Power Sensor, InGaAs, 800 - 1700 nm, 3 W
$1,012.86
5-8 Days
S146C Support Documentation
S146CIntegrating Sphere Photodiode Power Sensor, InGaAs, 900 - 1650 nm, 20 W
$1,012.86
Today
S148C Support Documentation
S148CCustomer Inspired! Integrating Sphere Photodiode Power Sensor, InGaAs, 1200 - 2500 nm, 1 W
$847.62
Today
S180C Support Documentation
S180CIntegrating Sphere Photodiode Power Sensor, MCT (HgCdTe), 2.9 - 5.5 µm, 3 W
$3,685.26
Today

Fiber Photodiode Power Sensors

S150C and PM100D
Click to Enlarge

PM100D with S150C Sensor and FC Cable
  • For Fiber-Based Optical Power Measurements
  • Compact Sensor Integrated into the Connector
  • Integrated Design for use in the Field and Lab
  • Includes PM20-FC Fiber Adapter
    • S150C and S151C Sensors also Include PM20-SMA Adapters
    • Compatible LC/PC, SC/PC, and ST Fiber Adapters Also Available (See Table Below)
  • See the Full Web Presentation for More Information

The S15xC Compact Fiber Photodiode Power Sensor is designed to take power measurements from a wide variety of fiber coupled sources. The compact sensor, integrated into the power meter connector, features a unique integrated design housing the photodiode sensor, fiber coupling, and NIST-traceable data. Standard FC (and SMA - S150C and S151C) connectors are easily interchanged with a variety of standard fiber connectors.

Thorlabs offers a recalibration service for these photodiode power sensors, which can be ordered below (see Item # CAL1 for Si sensors and Item # CAL2 for InGaAs sensors).

Item #a S150C S151C S154C S155C
Sensor Image
(Click the Image to Enlarge)

S150C

S151C

S152C

S153C

Included Connectors FCb & SMA FCb
Wavelength Range 350 - 1100 nm 400 - 1100 nm 800 - 1700 nm
Power Range 100 pW to 5 mW
(-70 dBm to +7 dBm)
1 nW to 20 mW
(-60 dBm to +13 dBm)
100 pW to 3 mW
(-70 dBm to +5 dBm)
1 nW to 20 mW
(-60 dBm to +13 dBm)
Detector Type Si Photodiode InGaAs Photodiode
Linearity ±0.5%
Resolutionc 10 pW (-80 dBm) 100 pW (-70 dBm) 10 pW (-80 dBm) 100 pW (-70 dBm)
Measurement Uncertaintyd ±3% (440 - 980 nm)
±5% (350 - 439 nm)
±7% (981 - 1100 nm)
±3% (440 - 980 nm)
±5% (400 - 439 nm)
±7% (981 - 1100 nm)
±5%
Responsivityf (Click for Details)
Raw Data

Raw Data

Raw Data

Raw Data
Coating/Diffuser N/A Absorptive ND (Schott NG3) N/A
Head Temperature Measuremente NTC Thermistor 3 kΩ
Aperture Thread External SM05 (0.535"-40)
Fiber Adapters Included: PM20-FC and PM20-SMA
Optional: PM20-LC, PM20-SC, and PM20-ST
Included: PM20-FC
Optional: PM20-LC, PM20-SC, PM20-ST, and PM20-SMA
Compatible Consoles PM400, PM200, PM100D, PM100USB, PM100A, and PM320E
  • For complete specifications, please see the Specs tab here.
  • Because of the large active detector area of these sensors, the included PM20-FC fiber adapter can be used with both FC/PC- and FC/APC-connectorized fiber. 
  • Measured with PM100D console in low bandwidth setting.
  • For a beam diameter > 1 mm incident on the active area of the detector (i.e. at the detector surface after the light has exited the fiber and passed through any internal optics).
  • This specification is valid for devices with serial numbers 1203xxx and higher. For older versions, please contact technical support.
  • All sensor responsivities are calibrated to a NIST-traceable source with measurements taken in 5 nm intervals.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
S150C Support Documentation
S150CCompact Fiber Photodiode Power Sensor, Si, 350 - 1100 nm, 5 mW
$306.00
Today
S151C Support Documentation
S151CCompact Fiber Photodiode Power Sensor, Si, 400 - 1100 nm, 20 mW
$348.84
Today
S154C Support Documentation
S154CCompact Fiber Photodiode Power Sensor, InGaAs, 800 - 1700 nm, 3 mW
$439.62
Today
S155C Support Documentation
S155CCompact Fiber Photodiode Power Sensor, InGaAs, 800 - 1700 nm, 20 mW
$503.88
Today

High-Resolution Thermal Power Sensors

Item #a S401C S405C
Sensor Image
(Click the Image to Enlarge)
S401C S405C
Wavelength Range 190 nm - 20 µm 190 nm - 20 µm
Optical Power Range 10 µW - 1 W (3 Wb) 100 µW - 5 W 
Input Aperture Size Ø10 mm Ø10 mm
Active Detector Area
10 mm x 10 mm 10 mm x 10 mm
Max Optical Power Density 500 W/cm² (Avg.) 1.5 kW/cm² (Avg.)
Detector Type Thermal Surface Absorber (Thermopile)
with Background Compensation
Thermal Surface Absorber (Thermopile)
Linearity ±0.5% ±0.5%
Resolutionc 1 µW 5 µW
Measurement Uncertaintyd ±3% @ 1064 nm
±5% @ 190 nm - 10.6 µm
±3% @ 1064 nm 
±5% @ 250 nm - 17 µm
Response Timee 1.1 s 1.1 s
Cooling Convection (Passive)
Housing Dimensions
(Without Adapter)
33.0 m x 43.0 mm x 15.0 mm
(1.30" x 1.69" x 0.59")
40.6 mm x 40.6 mm x 16.0 mm
(1.60" x 1.60" x 0.63")
Temperature Sensor
(In Sensor Head)
NTC Thermistor NTC Thermistor
Cable Length 1.5 m
Post Mounting Universal 8-32 / M4 Taps
(Post Not Included)
Universal 8-32 / M4 Taps
(Post Not Included)
30 mm Cage Mounting - Two 4-40 Tapped Holes &
Two Ø6 mm Through Holes
Aperture Threads - Internal SM05
Accessories Externally SM1-Threaded Adapter
Light Shield with Internal SM05 Threading
Externally SM1-Threaded Adapter
Compatible Consoles PM400, PM200, PM100D, PM100A, PM100USB, and PM320E
  • For complete specifications, please see the Specs tab.
  • For conditions of intermittent use, with a maximum exposure time of 20 minutes for the S401C. The S405C saturates for optical input powers >5 W.
  • Measurement taken with the PM200 console for the S401C and the PM400 console for the S405C. In all cases, the acceleration circuit was switched off. Resolution performance will be similar with our other power meter consoles.
  • Defined as the measurement uncertainty during calibration at the specified wavelengths for a beam diameter > 1 mm. The ±3% specification was determined by laser calibration, and the ±5% specification was determined through spectral calibration, in which values were interpolated using the laser calibration data and the absorption curve for the absorber. Calibration can be performed at 10.6 µm upon request. 
  • Typical natural response time (0 - 95%). Our power consoles can provide estimated measurements of optical power on an accelerated time scale (typically <1 s). See the Operation tab for additional information.
  • High Resolution of 1 μW or 5 μW
  • S401C and S405C Have Thermistors Used to Monitor Temperature of Sensor Head
  • S401C: Background Compensation for Low-Drift Measurements
  • S405C: Accommodates Average Optical Power Densities up to 1.5 kW/cm²
  • See the Full Web Presentation for More Information

Click to Enlarge

S401C Thermal Sensor with Included Light Shield

Thorlabs offers two broadband thermal power sensors designed to measure low optical power sources with high resolution. Each thermal sensor's broadband coating has a flat spectral response over a wide wavelength range, as shown in the plot below.

An aperture size of Ø10 mm allows for easy alignment and measurement of large-spot-size laser sources. For easy integration with Thorlabs' lens tube systems and SM1-threaded (1.035"-40) fiber adapters, each sensor has either external SM1 threading or includes an externally SM1-threaded adapter.

The S401C uses active thermal background compensation to provide low-drift power measurements. This is implemented through the use of two similar sensor circuits. One sensor circuit is the type all thermal power sensors share: it measures heat flow from light absorber to heat sink. The other sensor circuit monitors the ambient temperature. It is located within the housing and measures heat flow from heat sink towards the absorber. The measurements of the two sensor circuits are subtracted, which minimizes the effect of thermal drift on the laser power measurement. (For information about how the external thermal disturbances can affect thermal power sensor readings, see the Operation tab.) The broadband coating used on this thermal sensor offers high absorption at wavelengths between 0.19 and 20 µm (shown in the graph), which makes the sensor ideal for use with aligning and measuring Mid-IR Quantum Cascade Lasers (QCLs). The included, internally SM05-threaded (0.535"-40) light shield is shown in the photo to the right.

The S405C has internal SM05 (0.535"-40) threading that is directly compatible with SM05 lens tubes, and it can also connect directly to Thorlabs' 30 mm Cage Systems.

Thorlabs offers a recalibration service for these sensors, which can be ordered below (see Item # CAL-S200).

Low Power High Resolution Thermal Sensor Absorption
Click to Enlarge

The S405 shares the same absorption curve with the S415C, S425C, and S245C-L. (All are sold below.)
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
S401C Support Documentation
S401CThermal Power Sensor Head, Surface Absorber, 0.19 - 20 µm, 1 W, Ø10 mm
$740.52
Today
S405C Support Documentation
S405CThermal Power Sensor Head, Surface Absorber, 0.19 - 20 µm, 5 W, Ø10 mm
$704.00
Today

Thermal Sensors for Max Powers of 10 W

Item #a S415C S425C
Sensor Image
(Click Image to Enlarge)
S415C S425C
Wavelength Range 190 nm - 20 µm 190 nm - 20 µm
Optical Power Range 2 mW - 10 W (20 Wb) 2 mW - 10 W (20 Wb)
Input Aperture Size Ø15 mm Ø25.4 mm
Active Detector Area
Ø15 mm Ø27 mm
Max Optical
Power Density 
1.5 kW/cm² (Avg.) 1.5 kW/cm² (Avg.)
Detector Type Thermal Surface Absorber (Thermopile)
Linearity ±0.5% ±0.5%
Resolutionc 100 µW 100 µW
Measurement
Uncertaintyd
±3% @ 1064 nm
±5% @ 250 nm - 17 µm
±3% @ 1064 nm
±5% @ 250 nm - 17 µm
Response Timee 0.6 s 0.6 s
Cooling Convection (Passive)
Housing Dimensions
(Without Adapter)
50.8 mm x 50.8 mm x 35.0 mm
(2.00" x 2.00" x 1.38")
50.8 mm x 50.8 mm x 35.0 mm
(2.00" x 2.00" x 1.38")
Temperature Sensor
(In Sensor Head)
NTC Thermistor
Cable Length 1.5 m
Post Mounting Universal 8-32 / M4 Taps
(Post Not Included)
Universal 8-32 / M4 Taps
(Post Not Included)
30 mm Cage Mounting - -
Aperture Threads Internal SM1 Internal SM1
Removable Heatsink Yes Yes
Accessories Externally SM1-Threaded Adapter Externally SM1-Threaded Adapter
Compatible Consoles PM400, PM200, PM100D, PM100USB, PM100A, and PM320E
  • For complete specifications, please see the Specs tab.
  • Two Minute Maximum Exposure Time
  • Measurement taken with the PM400 with the acceleration circuit switched off. Resolution performance will be similar with our other power meter consoles.
  • Defined as the measurement uncertainty during calibration at the specified wavelengths for a beam diameter > 1 mm. The ±3% specification was determined by laser calibration, and the ±5% specification was determined through spectral calibration, in which values were interpolated using the laser calibration data and the absorption curve for the absorber. Calibration can be performed at 10.6 µm upon request.
  • Typical natural response time (0 - 95%). Our power consoles can provide estimated measurements of optical power on an accelerated time scale (typically <1 s). As the natural response times of the S415C and S425C are fast, these do not benefit from accelerated measurements and this function cannot be enabled. See the Operation tab for additional information.
  • 100 µW Optical Power Resolution
  • Thermistors Used to Monitor Temperature of Sensor Head
  • Removable Heat Sinks Included
  • See the Full Web Presentation for More Information

These thermal power sensors are designed for general broadband power measurements of low and medium power light sources. All include an externally SM1-threaded (1.035"-40) adapter, with threading concentric with the input aperture. The adapters are useful for mounting Ø1" Lens Tubes and Fiber Adapters (available below). The apertures of the S415C and S425C have internal SM1 threading.

These sensors operate with fast (<0.6 s) natural response times, and their removable heat sinks provide a high degree of flexibility to those interested in integrating them into custom setups or replacing the included heat sink with one that is water or fan cooled. If replacing the heat sink, please note that the replacement must provide heat dissipation adequate for the application.

Thorlabs offers a recalibration service for these sensors, which can be ordered below (see Item # CAL-S200).

Thermal Sensor Absorption Mid-Power Thermal
Click to Enlarge

The absorption curves of each of the thermal power sensors designed for use with low and medium power optical sources.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
S415C Support Documentation
S415CThermal Power Sensor Head, Surface Absorber, 0.19 - 20 µm, 10 W, Ø15 mm
$726.00
Today
S425C Support Documentation
S425CThermal Power Sensor Head, Surface Absorber, 0.19 - 20 µm, 10 W, Ø25.4 mm
$792.00
Today

Thermal Sensors for Max Powers from 40 W to 200 W

Thermal Sensor Absorption Mid-Power Thermal
Click to Enlarge

The absorption curves of each of the thermal power sensors designed for use with low and medium power optical sources.
  • Thermistors Used to Monitor Temperature of Sensor Head
  • S322C Has 4-40 Taps for Use with Our 30 mm Cage Systems
  • S350C Has Ø40 mm Aperture Well Suited to Excimer and Other Lasers with Large Spot Sizes
  • S425C-L Features Removable Heat Sink
  • S322C is Fan Cooled with an Optical Power Range up to 200 W
  • See the Full Web Presentation for More Information

These thermal power sensors are designed for general broadband power measurements of low and medium power light sources. With the exception of the S350C, all include an adapter with external SM1 (1.035"-40) threading concentric with the input aperture. This allows the sensors to be integrated into existing Ø1" lens tube systems in addition to being compatible with fiber adapters (available below). The aperture of the S425C-L has internal SM1 threading.

The S425C-L operates with a fast (<0.6 s) natural response time and has a removable heat sink, which provides a high degree of flexibility to those interested in integrating them into custom setups or replacing the included heat sink with one that is water or fan cooled. If replacing the heat sink, please note that the replacement must provide heat dissipation adequate for the application.

Thorlabs offers a recalibration service for these sensors, which can be ordered below (see Item # CAL-S200).


Item #a S350C S425C-L S322C
Sensor Image
(Click Image to Enlarge)
S350C S425C-L S322C
Wavelength Range 190 nm- 1.1 µm, 10.6 µm 190 nm - 20 µm 250 nm - 11 µm
Optical Power Range 10 mW - 40 W (60 Wb) 2 mW - 50 W (75 Wb) 100 mW - 200 W (250 Wb)
Input Aperture Size Ø40 mm Ø25.4 mm Ø25 mm
Active Detector Area
Ø40 mm Ø27 mm Ø25 mm
Max Optical Power Density 2 kW/cm² (Avg.) 1.5 kW/cm² (Avg.) 4 kW/cm² (Avg., CO2
Detector Type Thermal Surface Absorber (Thermopile)
Linearity ±1% ±0.5% ±1%
Resolutionc 1 mW 100 µW 5 mW
Measurement Uncertaintyd ±3% @ 351 nm
±5% @ 190 nm - 1100 nm
±3% @ 1064 nm 
±5% @ 250 nm - 17 µm
±3% @ 1064 nm
±5% @ 266 nm - 1064 nm
Response Timee 9 s
(1 s from 0 to 90%)
0.6 s 5 s
(1 s from 0 to 90%)
Cooling Convection (Passive) Forced Air with Fanf
Housing Dimensions
(Without Adapter, if Applicable)
100 mm x 100 mm x 54.2 mm
(3.94" x 3.94" x 2.13")
100.0 mm x 100.0 mm x 58.0 mm
(3.94" x 3.94" x 2.28")
100 mm x 100 mm x 86.7 mm
(3.94" x 3.94" x 3.41")
Temperature Sensor
(In Sensor Head)
NTC Thermistor
Cable Length 1.5 m
Post Mounting M6 Threaded Taps, Includes
Ø1/2" Post, 75 mm Long
Universal 8-32 / M4 Taps
(Post Not Included)
M6 Threaded Taps, Includes
Ø1/2" Post, 75 mm Long
30 mm Cage Mounting - - Four 4-40 Tapped Holes
Aperture Threads - Internal SM1 -
Removable Heatsink - Yes -
Accessories - Externally SM1-Threaded Adapter Externally SM1-Threaded Adapter
Compatible Consoles PM400, PM200, PM100D, PM100USB, PM100A, and PM320E
  • For complete specifications, please see the Specs tab.
  • Two Minute Maximum Exposure Time
  • Measurement taken with the PM100D console, except for the S425C-L in which the PM400 was used. In all cases, the acceleration circuit was switched off. Resolution performance will be similar with our other power meter consoles.
  • Defined as the measurement uncertainty during calibration at the specified wavelengths for a beam diameter > 1 mm. The ±3% specification was determined by laser calibration, and the ±5% specification was determined through spectral calibration, in which values were interpolated using the laser calibration data and the absorption curve for the absorber. Calibration can be performed at 10.6 µm upon request.
  • Typical natural response time (0 - 95%). Our power consoles can provide estimated measurements of optical power on an accelerated time scale (typically <1 s) for the S350C and S322C. As the natural response time of the S425C-L is fast, the S425C-L does not benefit from acceleration and this function cannot be enabled. See the Operation tab for additional information.
  • 12 VDC power supply is included.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
S350C Support Documentation
S350CThermal Power Sensor Head, Surface Absorber, 0.19 - 1.1 µm and 10.6 µm, 40 W, Ø40 mm
$1,095.48
Today
S425C-L Support Documentation
S425C-LThermal Power Sensor Head, Surface Absorber, 0.19 - 20 µm, 50 W, Ø25.4 mm
$858.00
5-8 Days
S322C Support Documentation
S322CThermal Power Sensor Head, Surface Absorber, 0.25 - 11 µm, 200 W, Ø25 mm, Fan Cooled
$1,356.60
Today

Thermal Sensors for High Max Power Density Laser Pulses

Item #a S370C S470C
Sensor Image
(Click the Image to Enlarge)
S370C S470C
Wavelength Range 400 nm - 5.2 µm 250 nm - 10.6 µm
Optical Power Range 10 mW - 10 W (15 Wb) 100 µW - 5 W (Pulsed and CW)
Input Aperture Size Ø25 mm Ø15 mm
Active Detector Area
Ø25 mm Ø16 mm
Max Optical Power Density 35 W/cm² (Avg.); 100 GW/cm² (Peak)
Detector Type Thermal Volume Absorber (Thermopile)
Linearity ±1% ±0.5%
Resolutionc 250 µW 10 µW
Measurement Uncertaintyd ±3% @ 1064 nm 
±5% @ 400 nm - 1064 nm
±3% @ 1064 nm 
±5% @ 250 nm - 10.6 µm
Response Timee 45 s
(3 s from 0 to 90%)
6.5 s
(<2 s from 0 to 90%)
Cooling Convection (Passive)
Housing Dimensions
(Without Adapter, if Applicable)
75 mm x 75 mm x 51.2 mm
(2.95" x 2.95" x 2.02")
45.0 mm x 45.0 mm x 18.0 mm
(1.77" x 1.77" x 0.71")
Temperature Sensor
(In Sensor Head)
N/A N/A
Cable Length 1.5 m
Post Mounting M6 Threaded Taps, Includes
Ø1/2" Post, 75 mm Long
Universal 8-32 / M4 Tap
(Post Not Included)
30 mm Cage Mounting Four 4-40 Tapped Holes -
Aperture Threads - External SM1
Accessories Externally SM1-Threaded Adapter -
Compatible Consoles PM400, PM200, PM100D, PM100A, PM100USB, and PM320E
  • For complete specifications, please see the Specs tab.
  • Two Minute Maximum Exposure Time
  • Measurement taken with the PM100D console for the S370C and with the PM200 for the S470C. In all cases, the acceleration circuit was switched off. Resolution performance will be similar with our other power meter consoles.
  • Defined as the measurement uncertainty during calibration at the specified wavelengths for a beam diameter > 1 mm. The ±3% specification was determined by laser calibration, and the ±5% specification was determined through spectral calibration, in which values were interpolated using the laser calibration data and the absorption curve for the absorber. Calibration can be performed at 10.6 µm upon request.
  • Typical natural response time (0 - 95%). Our power consoles can provide estimated measurements of optical power on an accelerated time scale (typically <2 s). See the Operation tab for additional information.
  • Designed for Optical Power Measurements of Nd:YAG Lasers
  • Ideal for Applications with High Peak Pulse Powers
  • S370C: Ø25 mm Aperture for Large-Spot-Size Beams
  • S470C: High-Sensitivity for High-Peak-Power Pulses with Low Average Power
  • See the Full Web Presentation for More Information

The S370C and S470C Thermal Sensors are designed to measure short and highly energetic laser pulses. All of these units are post-mountable for free-space applications and feature NIST-traceable data stored in the sensor connector.

These thermal power sensors are unique in that they have thermal volume absorbers, where our other thermal power sensors have thermal surface absorbers. The volume absorber consists of a Schott glass filter. Incident pulses are absorbed and the heat is distributed throughout the volume. In this way, pulses that would have damaged the absorption coating of a thermal surface absorber are safely measured by these thermal volume absorbers. 

The S370C features a large Ø25 mm aperture ideal for large-spot-size beams, and it is compatible with average powers from 10 mW to 10 W (CW).

In comparison, the S470C is faster, as the glass absorber volume is reduced and other design parameters have been optimized for speed. This results in a different optical power range, with the ability to measure powers down to 100 µW. The Ø15 mm aperture is of the S470C is smaller, and it has a lower max average power of 5 W. Its 10 µW resolution is better than the 250 µW resolution of the S370C.

Thorlabs offers a recalibration service for these sensors, which can be ordered below (see Item # CAL-S200).

Thermal Sensor Absorption Pulsed Lasers
Click to Enlarge

This absorption curve is shown over a broader wavelength range than the sensors' operating ranges. See the table for the operating wavelength range of each sensor.
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S370C Support Documentation
S370CThermal Power Sensor Head, Volume Absorber, 0.4 - 5.2 µm, 10 W, Ø25 mm
$1,137.30
Today
S470C Support Documentation
S470CThermal Power Sensor Head, Volume Absorber, 0.25 - 10.6 µm, 0.1mW - 5W, Ø15 mm
$1,157.70
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Pyroelectric Energy Sensors

ES220C with a 30 mm Cage System
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ES220C Sensor Mounted in a 30 mm Cage System
  • For General Purpose and High Energy Optical Pulse Measurements
  • Black Broadband Coating with Flat Response Over a Wide Wavelength Range
  • Ceramic Coating with High Damage Thresholds for High-Energy-Density Lasers
  • Sensor Areas from Ø11 mm to Ø45 mm
  • BNC Connector for Oscilloscope Use
  • C-Series Connector Adapter for Use with Compatible Thorlabs Consoles (See Table Below)
  • See the Full Web Presentation for More Information

These Pyroelectric Sensors are designed to measure pulsed coherent and incoherent sources. Pyroelectric sensors are not suited for CW measurements, as they convert energy from light pulses into voltage pulses. A black broadband or ceramic coating is used for low or high power measurements, respectively. Large sensor areas from
Ø11 mm - Ø45 mm allow easy alignment. The energy sensors features BNC connectors for use with an oscilloscope, as well as standard power meter connectors which contain NIST and PTB-traceable calibration data.

Thorlabs offers a recalibration service for these energy sensors, which can be ordered below (see Item # CAL-S200).

Item #a ES111C ES120C ES145C ES220C ES245C
Sensor Image
(Click the Image to Enlarge)
ES111C ES120C ES145C ES220C ES245C
Aperture Size Ø11 mm Ø20 mm Ø45 mm Ø20 mm Ø45 mm
Wavelength Range 0.185 - 25 µm
Energy Range 10 µJ - 150 mJ 100 µJ - 500 mJ 500 µJ - 2 J 500 µJ - 3 J 1 mJ - 15 J
Detector Type Pyroelectric Energy Sensor with Black Broadband Coating Pyroelectric Energy Sensor with Ceramic Coating
Resolution 100 nJ 1 µJ 1 µJ 25 µJ 50 µJ
Linearity ±1%
Measurement Uncertainty ±5% @ 0.185 - 25 µm
Housing Dimensions Ø36 mm x 16 mm Ø50 mm x 18 mm Ø75 mm x 21 mm Ø50 mm x 18 mm Ø75 mm x 21 mm
Cable Length 1.5 m
Post Mounting 8-32 Mounting Thread, 8-32 and M4 Insulating Adapters Included
Cage Mounting N/A Four 4-40 Taps for
30 mm Cage Systems
N/A Four 4-40 Taps for
30 mm Cage Systems
N/A
Compatible Consoles PM400, PM200, PM100D, PM100USB, and PM320E
  • For complete specifications, please see the Specs tab here.
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ES111C Support Documentation
ES111CPyroelectric Energy Sensor, Broadband Coating, 0.185 - 25 µm, 150 mJ
$1,293.36
Today
ES120C Support Documentation
ES120CPyroelectric Energy Sensor, Broadband Coating, 0.185 - 25 µm, 500 mJ
$1,346.40
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ES145C Support Documentation
ES145CPyroelectric Energy Sensor, Broadband Coating, 0.185 - 25 µm, 2 J
$1,554.48
Today
ES220C Support Documentation
ES220CPyroelectric Energy Sensor, Ceramic Coating, 0.185 - 25 µm, 3 J
$1,616.70
Lead Time
ES245C Support Documentation
ES245CPyroelectric Energy Sensor, Ceramic Coating, 0.185 - 25 µm, 15 J
$1,877.82
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Recalibration Service for Photodiode Power Sensors

Calibration Service Item # Compatible Sensors
CAL1 S120VC, S120C, S121C, S170C, S140C, S142C, S150C, S151C
CAL2 S122C, S144C, S145C, S146C, S154C, S155C
CAL-S130 S130VC, S130C
CAL-S132 S132C
CAL4 S148C, S180C

Thorlabs offers calibration services for our photodiode optical power sensors and consoles. To ensure accurate measurements, we recommend recalibrating the sensors annually. Recalibration of the console is included with the recalibration of a sensor at no additional cost. If you wish to recalibrate only your power meter console, please contact Tech Support for details.

Refer to the table to the right for the appropriate calibration service Item # that corresponds to your power meter sensor. Once the appropriate Item # is selected, enter the Part # and Serial # of the sensor that requires recalibration prior to selecting Add to Cart.

Please Note: To ensure your item being returned for calibration is routed appropriately once it arrives at our facility, please do not ship it prior to being provided an RMA Number and return instructions by a member of our team.
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CAL1 Support Documentation
CAL1Recalibration Service for Si Power Meter Sensors Except S130 Series
Part Number:  Serial Number:
$143.82
Lead Time
CAL2 Support Documentation
CAL2Recalibration Service for Ge & InGaAs Power Meter Sensors Except S132 Series and S148C
Part Number:  Serial Number:
$162.18
Lead Time
CAL-S130 Support Documentation
CAL-S130Recalibration Service for Si Power Meter Sensors for S130 Series and PM160
Part Number:  Serial Number:
$167.28
Lead Time
CAL-S132 Support Documentation
CAL-S132Recalibration Service for Ge Power Meter Sensors for S132 Series only
Part Number:  Serial Number:
$177.48
Lead Time
CAL4 Support Documentation
CAL4Recalibration Service for MCT and Extended InGaAs Mid-IR Power Sensors (S148C and S180C)
Part Number:  Serial Number:
$289.68
Lead Time

Recalibration Service for Thermal Power and Pyroelectric Energy Sensors

Sensor Type Sensor Item #s
Thermal Power S175C, S302Ca, S305Ca, S310Ca, S314Ca, S322C, S350C, S370C, S401C, S405C, S415C, S425C, S425C-L, S470C
Pyroelectric Energy ES111C, ES120C, ES145C, ES220C, ES245C
  • This former catalog item is now offered as a special.

Thorlabs offers recalibration services for our thermal power and pyroelectric energy sensors. To ensure accurate measurements, we recommend recalibrating the sensors annually. Recalibration of the console is included with the recalibration of a sensor at no additional cost. If you wish to recalibrate only your power meter console, please contact Tech Support for details.

The table to the right lists the sensors for which this calibration service is available. Please enter the Part # and Serial # of the sensor that requires recalibration prior to selecting Add to Cart.

Please Note: To ensure your item being returned for calibration is routed appropriately once it arrives at our facility, please do not ship it prior to being provided an RMA Number and return instructions by a member of our team.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
CAL-S200 Support Documentation
CAL-S200Recalibration Service for Thermal Power and Pyroelectric Energy Sensors
Part Number:  Serial Number:
$182.58
Lead Time
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