Products Home / Optical Power and Energy Meters / Handheld Optical Power and Energy Meter Console with Multi-Touch TechnologyHandheld Optical Power and Energy Meter Console with Multi-Touch Technology
- Projected Capacitive Touchscreen with Color Display
- Over 35 Compatible Optical Power and Energy Sensors
- Supports Spectral Calibration and Attenuation Correction
- Inputs for Temperature and Humidity Sensors
PM400
Touchscreen Power
and Energy Meter Console
The PM400 allows power or energy measurements and temperature data to be recorded, saved, and analyzed at a later time. The graphs can be zoomed and scrolled using multi-touch gestures.
Please Wait
| PM400 Power Meter Consolea | |
|---|---|
| Compatible Sensors | Photodiode Power, Thermal Power, Thermal Position & Power, and Pyroelectric Energyb |
| Optical Power Rangec | 100 pW to 200 W |
| Optical Energy Rangec | 3 µJ to 15 J |
| Max Repetition Ratec | 3 kHz |
| Available Sensor Wavelength Rangec | 185 nm - 25 μm |
| Display Refresh Rate | 10 Hz (Numerical) 25 Hz (Analog Simulation) |
| Bandwidthc | DC - 100 kHz |
| Power Meter Selection Guide |
|---|
| Sensors |
| Photodiode Power Sensors |
| Thermal Power Sensors |
| Thermal Position & Power Sensors |
| Pyroelectric Energy Sensors |
| Power Meter Consoles |
| Digital Handheld Console |
| Analog Handheld Console |
| Touchscreen Handheld Console |
| Dual-Channel Benchtop Console |
| Complete Power Meters |
| Power Meter Bundles |
| Wireless Power Meters with Sensors |
| Compact USB Power Meters |
| Field Power Meters for Terminated Fibers |
| USB Interfaces, External Readout |
Features
- Compact Digital Power Meter Console
- For CW and Pulsed Source Detection
- Inputs for Temperature and Humidity Sensors
- Save and Apply User-Provided Spectral Calibration and Attenuation Correction Files
- Touchscreen Display with Multi-Touch Technology
- USB 2.0 Interface for Remote Control, Data Transfer, and Charging
- Long-Life Internal Li-Polymer Battery
- Up to 10 Hours of Battery-Powered Operation between Charging
- Compatible with TSP-TH Temperature Probe
- Sensor Upgrade and Recalibration Services Available
- Optical Power Monitor PC Software Available (See Software Tab for Details)
The PM400 console is designed to be used with Thorlabs' power, position & power, and energy sensors to measure the optical power of laser light, other monochromatic, or near monochromatic light sources or the energy of pulsed light sources. The projected capacitive touchscreen uses multi-touch technology, allowing data displays to be zoomed and scrolled with hand gestures. Capacitive touch buttons on the front of the unit enable fast access to set the source wavelength or spectrum, a delta mode that shows the change in power from a user-selected set point, the zeroing function, and device main menu. The touchscreen is sensitive enough that it can be operated while wearing latex, nitrile, or cotton gloves. The screen is also backlit and can be dimmed to 1% of the maximum brightness.
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The PM400 features a variety of input ports for compatible optical sensors and temperature sensors, as well as a 14-pin auxiliary input for custom applications.
In the simplest operating mode, power and energy measurements can be viewed with a simulated analog needle or numerical display. Alternatively, data can be logged over time and saved to the device's internal memory. A graph display allows the user to examine and analyze the results with multi-touch enabled zoom and scrolling features, while a statistics display allows the user to program and analyze a sequence of measurements. In addition to pre-programming source wavelengths or spectra for calibrating their measurements, users can also enter and save up to twelve attenuation values or data files to correct for effects that external devices (such as filters or beamsplitters) may have on the power measurement. Measured data, calibration information, and attenuation curves can all be saved to the unit's internal 4 GB flash memory. The user can modify and copy the files saved to internal memory by connecting the unit to a PC via the USB port.
The PM400 console is compatible with more than 35 photodiode, integrating sphere, fiber, thermal, and pyroelectric sensors designed for use from the UV to the Mid-IR, available below. The Sensor Selection tab offers a comparison of the operating wavelengths and power or energy ranges for each sensor. Thorlabs' compatible C-series sensors can be hot-swapped when used with the PM400 console. The sensor connector contains the sensor information, including NIST-traceable responsivity curves, sensor types, and model numbers, which the PM400 uses to produce calibrated power measurements. These details can be shown on the sensor information display screen of the PM400. Alternatively, the console can be connected to compatible third-party and custom sensors via either the female DB9 connector or the 14-pin auxiliary input (see the Specs and Pin Diagrams tab for sensor compatibility information).
An external humidity sensor or combined humidity/temperature sensor unit can be connected via the 14-pin auxiliary input (see the Pin Diagrams tab). This input also provides access to the four programmable I/O ports for controlling shutters, interlock devices, laser warning lights, and other common lab devices. Alternatively, a 2.5 mm stereo (3P) jack accepts the TSP-TH thermistor temperature probe, as shown in the image below.
A 3.5 mm mono audio (2P) jack provides a 0 to 2 V analog signal that corresponds to the ratio of the measured value to the full scale value; a BNC adapter for this jack is included so that the output can be easily viewed using an oscilloscope or other device.
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.
As the PM400 uses a projected capacitive touchscreen, the outer surface is glass that can be easily cleaned with any common screen cleaning fluid.
To view the full range of Thorlabs' power and energy meter consoles, please refer to the Console Selection tab.
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 PM400. Please contact our Tech Support team for details.
Recalibration Service
Recalibration services are available for our power sensors, energy sensors, and consoles. We recommend that your Thorlabs sensor and console be recalibrated as a pair; however, each may be recalibrated individually. To order this service for a photodiode power sensor, thermal power sensor, pyroelectric energy sensor, or single-channel console, scroll to the bottom of the page and select the appropriate recalibration Item # that corresponds to your sensor or console. Recalibration of a thermal position sensor can be requested by contacting Tech Support. Recalibration of a single-channel console is included with the recalibration of a sensor at no additional cost.
| Specifications | |
|---|---|
| Compatible Detectors | Thorlabs' C-Series Photodiode, Thermal Power, Thermal Position & Power, and Pyroelectric Sensors (Except Item # ES408C) Photodiodes up to 5 mA, Thermopiles up to 1 V, and Pyroelectric Detectors up to 100 V See Table Below for Additional Details |
| Display | |
| Type | 4.3" TFT, WQVGA, 400 x 272 Pixels, 16 Bit Color |
| Viewing Area | 95 mm x 54 mm |
| Update Rate (Max) | 10 Hz Numerical, 25 Hz Analog Simulation |
| Format | Numerical, Bar Graph, Trend Graph, Statistics, and Simulated Analog Needle |
| Backlight | LED, Adjustable |
| Features | Projected Capacitive Touchscreen and Buttons, Support Stand, Rubberized Outside, 2 x M3 Threaded Inserts for Mounting on Back Side |
| Analog Output | |
| Connector | 3.5 mm Mono Audio (2P) Jack, Adapter to BNC Included |
| Signal | Amplified Input Signal - Not Corrected |
| Voltage Range | 0 to 2 V |
| Accuracy | ±3% |
| Bandwidth | Up to 100 kHz, Dependent on Sensor and Settings |
| Auxiliary Input/Output | |
| Connector | 2 x 7 Pins, 0.1" Socket, Top Side |
| Function | 4 x GPIO 2 x 10 bit ADC for External Temperature, Relative Humidity Sensor +3.3 V, +/- 2.5 V (100 mA Max) |
| Temperature Sensor Internal to C-Series Optical Sensora | |
| Temperature Sensor Type | Thermistor |
| Temperature Measurement Range | -10 °C to 80 °C |
| External Temperature Sensor | |
| Supported Temperature Sensor | Thermistor NTC 0.1 - 100 kΩ, B-Value 1000 - 9999 K |
| Temperature Measurement Range | -10 °C to 80 °C (with TSP-TH) |
| Connector | 2.5 mm Stereo Audio (3P) Jack |
| Sound | |
| Type | Internal Speaker |
| Function | Laser Tuning Support, Console Function Support |
| Memory | |
| Type | NAND Flash |
| Size | 4 GB |
| Interfaces | |
| Type | USB 2.0 |
| Connector | Mini-B USB |
| Power Management | |
| Battery | LiPo 3.7 V 2600 mAh |
| Charger | Built In; Charging Current: 0.5 / 1 A |
| Power Connector | Mini USB |
| General | |
| Operating Temperature Rangeb | 0 to 40 °C |
| Storage Temperature Range | -40 to 70 °C |
| Dimensions | 136 mm x 96 mm x 29 mm |
| Weight | 0.35 kg |
| Sensor Compatibility | |||
|---|---|---|---|
| Sensor Type | Photodiode Power Sensors | Thermal Power Sensors Thermal Position & Power Sensors |
Pyroelectric Energy Sensorsa |
| Input Type | Current | Voltage | Voltage |
| Connector (on PM400) | Female DB9 | ||
| Units | W, dBm, W/cm², A | W, dBm, W/cm², V | J, J/cm², W, W/cm², V |
| Measurement Ranges | 6 Decades; 50 nA, 500 nA, 5 µA, 50 µA, 500 µA, 5 mA Ranges Selectable in W (Sensor Dependent) |
9 Ranges: 2, 4, 10, 20, 40, 100, 200, 400, 1000 mV Ranges Selectable in W (Sensor Dependent) |
4 Ranges: 200 mV, 2V, 20 V, 100 V Ranges Selectable in J (Sensor Dependent) |
| Display Resolution | 1 pA / Responsivity Value (A/W) | 1 μV / Responsivity Value (V/W) | 100 μV / Responsivity Value (V/J) |
| AD Converter | 16 bit | ||
| Accuracy | ±0.2% Full Scale (5 μA - 5 mA) ±0.5% Full Scale (50 nA) |
±0.5% Full Scale (10 mV - 1 V) ±1% Full Scale (2 mV) |
±0.5% Full Scale |
| Bandwidth | DC - 100 kHz, Dependent on Sensor and Settings | N/A | |
| Trigger Threshold | N/A | N/A | 3% - 90% Full Scale |
| Time Constant Correction Range |
N/A | 1 s - 30 s | N/A |
| Repetition Rate (Max) | N/A | N/A | 3 kHz |
| Wavelength Correction | nm, A/W (Sensor Dependent) | nm, V/W (Sensor Dependent) | nm, V/J (Sensor Dependent) |
| Beam Area Setting | Diameter 1/e² or Rectangular XY | ||
Video Insight: Optical Power Meter Parameter Setup
To obtain the most accurate power readings a power meter should be configured specifically for the light incident on the power sensor. This video demonstrates how to set three important optical power meter parameters: the center wavelength of the light, the maximum optical power the sensor will measure, and the zero offset resulting from the detection of ambient light.
If you would like more information about tips, tricks, and other methods we often use in the lab, we recommend our other Video Insights. In addition, our webinars provide practical and theoretical introductions to our different products.
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The Front Panel of the Touchscreen Power Meter
Touchscreen Power Meter Front Panel
Thorlabs' PM400 Power Meter features a front panel with several key elements, as shown in the photo to the right. The projected capacitive touchscreen and buttons are sensitive enough to allow smooth operation even when the user wears cotton, latex, or nitrile gloves, but durable enough to be cleaned with standard screen cleaning solvents.
- Capacitive Touchscreen: The capacitive touchscreen allows the user to control the console functions with finger taps and swipes. Features include numerical displays of power and energy measurements, logging of long-term measurements, settings for a calibration wavelength or a preset attenuation value, and temperature monitoring. The user can switch measurement views by swiping one finger over the screen to the left or right, or by tapping the window icon in the lower right corner of the screen. More details on the measurement options are provided below.
- Spectral Correction Button: This button opens a screen where the user can quickly select or save up to 12 measurement wavelengths. The PM400 will use this wavelength setting in conjunction with the calibration data recorded in the connector of Thorlabs' power and energy sensors in order to provide a calibrated optical power or energy reading. The selected wavelength is displayed above the button.
- Delta Mode: In delta mode, the power meter will display the power or energy relative to a user selected setpoint. Pressing this button saves the current power or energy reading as the reference value, and subsequent measurements will be displayed as the difference between the actual value and the reference. The reference value is displayed above this button when Delta Mode is active.
- Zeroing: Quickly set the current power or energy value as the zero point for subsequent measurements. The measured power or energy when the console is zeroed will be displayed above the Zero button.
- Main Menu: This button provides quick access to the main menu. From here, the user can access a submenu to set the parameters for long-term power measurements, device settings, the file manager, sensor info, and the laser calculator. Details are provided below.
Additional Features
In addition to allowing users to select different measurement modes and settings, the PM400 incorporates other features to allow users to customize the interface.
- Language Settings: English, French, German, and Chinese can be selected.
- Display Brightness and Contrast: The power meter screen is backlit and can be dimmed to 1% of the maximum brightness. In addition, the user can choose whether to have the display show white text on a black background, or black text on a white background.
- Laser Tuning Sound: The power meter plays an audible tone to aid in identifying when peak power is achieved while tuning a laser. The console will beep repeatedly, with the frequency of the beep increasing as the measured power increases.
- Programmable I/O Ports: The PM400 features four programmable I/O ports for controlling shutters, interlocks, laser warning lights, etc.
The Touchscreen Display
The screenshots below provide an overview of some of the measurement views, measurement settings, functions, and calculators accessible through the touchscreen display.
Numerical Display
| Subpanel Display Options | |||
|---|---|---|---|
| Photodiode Power Sensors | Thermal Power Sensors | Thermal Position & Power Sensors | Pyroelectric Energy Sensors |
| Current (IDET) | Voltage (VDET) | Voltage (VDET) | Voltage (VDET) |
| Power (Φe) | Power (Φe) | Power (Φe) | Energy (WDET) |
| Power in dBm (Φe) | Power in dBm (Φe) | Power in dBm (Φe) | N/A |
| Max | Max | Max | Max |
| Min | Min | Min | Min |
| Ratio (Max/Min) | Ratio (Max/Min) | Ratio (Max/Min) | Ratio (Max/Min) |
| Sensor Temperaturea | Sensor Temperaturea | Sensor Temperaturea | N/A |
| Frequency | Frequency | Frequency | Frequency |
| External NTC Temperature | External NTC Temperature | External NTC Temperature | External NTC Temperature |
| Irradiance (Ee) | Irradiance (Ee) | Irradiance (Ee) | Fluence (He) |
| N/A | N/A | XY Position | N/A |
The numerical display shows a digital measurement of the power or energy with a bar graph along the bottom. The orange and blue triangles on the bar graph show the min and max values detected during the measurement. To reset the min and max values, press the reset button on the front panel. The six rectangular subpanels immediately above the power or energy measurement are configurable displays, allowing the user to select which parameters to view. The Subpanel Display Options table provides a summary of available settings for each style of detector.
Simulated Analog Needle
Measurements can be viewed with a simulated analog needle. The orange and blue marks are indicators for the max and min measured power, and the scale can be zoomed by a factor of 10. Icons down the side of the screen allow the user to set the bandwidth, adjust the resolution of the digital value at the bottom of the display, change units, adjust the display update rate or change screens.
Graph View
In the graph view, the user can monitor the optical power or energy of a source as it changes over time. A second, optional display can be added that shows the readout from a connected temperature sensor (the upper graph in the screenshot above). Icons on the side of the window allow the user to start and stop the measurement, scroll through the data, and open the folder where the measurement is saved.
Statistics Display
In the statistics display, the user can start a sequential measurement. The sample rate and duration can be adjusted from the Capture Settings screen, accessible from the main menu. The bottom bar of the display shows the number of measurements taken, total elapsed time since the measurements were started, and the measurement interval. The main part of the display shows statistics for the accumulated measurements, including the minimum, maximum, mean, and standard deviation.
Spectral Correction
This mode can be entered by pressing the λ symbol on the front panel. The unit can store up to 12 preset spectral correction entries, editable by the user. In their simplest form, these entries can consist of a single user-entered wavelength that will be used in conjunction with the NIST-traceable calibration data from a Thorlabs' sensor to produce a calibrated power measurement. Alternatively, each entry can be a .csv file with the source spectrum that has been uploaded and saved. When a spectral correction entry is selected, the entry name will be displayed in the field above the spectral correction button.
Attenuation Correction
External devices within a setup, such as a filter or beamsplitter, may be needed to attenuate the signal being measured. The attenuation correction function allows the PM400 to display a power reading that accounts for these sources of attenuation. Attenuation values can be assigned as a multiplier (e.g. x2), in percent, in dB, or in OD (optical density). Alternatively, complete filter transmission curves can be uploaded and saved. Up to 12 different attenuation settings can be programmed and stored.
Main Menu
The PM400 main menu allows access to device features including the screen brightness, the menus to set the parameters for power, energy, and temperature measurements, a screen for calculating laser pulse characteristics, and a unit converter.
Capture Settings
This screen allows the user to set the parameters for taking data. User-selectable settings include manual or automatic data acquisition, the exposure time, the number of samples, and the capture interval. It also allows the temperature logging parameters to be set. Once all of the settings are selected, this screen will return an estimated file size so that the user can ensure there is enough free memory on the device. In the case of manual operation (the user manually starts and stops the measurement), the estimated output file size will be the rate at which memory is used up as the data is collected.
Sensor Measurement Settings
This screen allows the user to view sensor-dependent content, adjust common settings such as wavelength, attenuation, mode, etc., and enter beam parameters.
Temperature Sensor Settings
If an external temperature sensor is hooked up to the PM400, the user can adjust the parameters here.
Laser Calculator and Unit Converter
The PM400 has several calculators. The laser calculator screen allows the user to calculate laser beam parameters based on available inputs. A unit converter provides quick conversions between Watts and dBm or between wavelength, frequency, wavenumbers, and photon energy.
Position Trace Display (Thermal Position Sensors Only)
When used with the S440C or S442C thermal position sensors, the PM400 console can display a trace of the beam's position within a Ø1 mm circle or Ø6 mm circle on the sensor surface. The total beam power is also monitored in this mode.
Position Graph Display (Thermal Position Sensors Only)
Similar to the graph display above, the console can display a graph of the beam's X and Y coordinates over time when used with the S440C or S442C sensors. The user can toggle between this plot and a plot of the the beam's total power over time.
The PM400 Console is capable of supporting any of Thorlabs' C-Series sensor heads (except the ES408C Pyroelectric Energy Sensor) as well as some third-party and custom detectors. The main connections are shown in the photo below, and the pin diagrams below are provided to aid in determining sensor compatibility. Compatible sensor specifications are provided on the Specs tab.
Top View of the PM400 Console
Optical Sensor Head Input
9-Pin Female D-Sub
| Pin | Connection |
|---|---|
| 1 | +5 V (100 mA Max Current from this Pin) |
| 2 | DO NOT USEa |
| 3 | AGND (Analog Ground): Photodiode Ground (Anode), Thermal and Pyroelectric Sensor Ground |
| 4 | Photodiode Cathode |
| 5 | Pyroelectric Sensor + |
| 6 | DGND (Digital Ground) |
| 7 | Present: Connect this Pin via a 1 kΩ to 10 kΩ Resistor to Pin 3 (AGND) to Enable a Custom Sensor |
| 8 | Thermal Sensor + |
| 9 | Not Connected |
Auxiliary Connector
14-Pin Dual-In-Line Socket, 0.1" (2.54 mm) Pitch
| Pin | Connection |
|---|---|
| 1 | Ground |
| 2 | +3.3 VDC, 0.1 A |
| 3 | Do Not Use (No Function) |
| 4 | ADC Current In (Humidity Sensor) |
| 5 | Temp / Humidity Detection Module |
| 6 | ADC Current In (Temperature Sensor) |
| 7 | GPIO 02 |
| 8 | GPIO 01 |
| 9 | GPIO 03 |
| 10 | GPIO 04 |
| 11 | Ground |
| 12 | + 2.5 VDC, 0.05 A |
| 13 | Ground |
| 14 | -2.5 VDC, 0.05 A |
Mini-B USB 2.0 Port
For Remote Control with a Mini-USB Device and Charging
Analog Output
0 to 2 V,
3.5 mm Mono Audio (2P) Jack
Temperature Sensor Input
2.5 mm Stereo Audio (2P) Jack
for NTC
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The PM400 is shipped in an eco-friendly package.
Included Components
- Power Meter Console with Multi-Touch Technology
- BNC to 3.5 mm Mono Audio Adapter for Analog Output
- USB Cable, Type A to Mini B
- Operating Manual
- Certificate of Calibration
Compatible Power Meters
- Consoles:
- PM100A Analog Power and Energy Meter Console
- PM100D Digital Power and Energy Meter Console
- PM400 Capacitive Touchscreen Power and Energy Meter Console
- PM5020 Dual-Channel Benchtop Optical Power and Energy Meter Console (Version 4.0 or Later)
- Complete Power Meters:
- PM160, PM160T, and PM160T-HP Wireless Handheld Power Meters with Bluetooth® Technology
- PM16 Series Compact USB Power Meters
- Interfaces:
- PM101 Series Power Meter Interfaces with External Readout (Version 2.0 or Later)
- PM102 Series Power Meter Interfaces with External Readout (Version 2.1 or Later)
- PM103 Series Power Meter Interfaces with External Readout (Version 3.0 or Later)
- PM100USB USB Interface Digital Power and Energy 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.
Users interested in the legacy Power Meter Software can find it by visiting the software page.
The PM101 Series Power Meters are only compatible with version 2.0 or later. The PM102 Series Power Meters are only compatible with version 2.1 or later. The PM103 Series Power and Energy Meters are only compatible with version 3.0 or later. The PM5020 Console is only compatible with version 4.0 or later.
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
- Also Supports Position Measurements with Thermal Position & Power Sensors
- 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, RS232, 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. Beam position measurements are also supported when used with our thermal position & power sensors.
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, C/C++, Visual C#, and Python 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.
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Power Measurement Mode: Set up and configure up to eight power meters.
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Power Tuning Mode: Simulated analog needle and digital measurement value provided. Delta Mode, enabled above, shows the fluctuation range during the measurement period.
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Power 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.
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Position Tuning Mode: Tuning mode can be used with a thermal position & power sensor to aid in beam alignment.
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Position Statistics Mode: Statistics mode also provides aggregate information for thermal position & power sensors.
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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.
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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. Refer to the lower right table for power meter console and interface compatibility information.
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 four 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.
- Thermal Position & Power Sensors: These sensors incorporate four thermopiles arranged as quadrants of a square. By comparing the voltage output from each quadrant, the unit calculates the beam's position.
- 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.
| Console Compatibility | ||||||||
|---|---|---|---|---|---|---|---|---|
| Console Item # | PM100A | PM100D | PM400 | PM5020 | PM101 Series |
PM102 Series |
PM103 Series |
PM100USB |
| Photodiode Power |  |
|
|
|
|
- | |
|
| Thermal Power | |
|
|
|
|
|
- | |
| Thermal Position | - | - | |
|
- | |
- | - |
| Pyroelectric Energy | - | a |
a |
|
- | - | |
a |
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 |
|---|
| Thermal Position & Power Sensors |
|---|
| Pyroelectric Energy Sensors |
|---|
Sensor Options
(Arranged by Wavelength Range)
Sensor Options
(Arranged by Power Range)
| Posted Comments: | |
user
(posted 2022-09-14 10:22:26.863) I can find two VI folders (TLPM and TLPMX) in the LabVIEW folder after installing the software for the power meter. Can you tell me the difference of these VIs? GBoedecker
(posted 2022-09-14 07:23:52.0) Thank you for your inquiry. TPLMX is the driver for the dual-channel power meter PM5020. For the other power meters, you can use TPLM. Y BoH
(posted 2021-03-09 02:59:53.623) It is such a shame that Thorlabs releases a product with such low quality language support. The Chinese translation is just garbage(Even google translation does a much better job than that!). If you have a colleague knowing Chinese, switch your PM400 with firmware 1.2.8 to Chinese(in display menu), and loop through other menus and pages, your colleague will sure laugh out loud.
I am willing to fix this for Thorlabs if Thorlabs give me a new PM400 for free. tcampbell
(posted 2021-03-10 08:26:27.0) Hello, and thank you for your honest feedback on our device's programming. We have begun working to improve the power meter console's Chinese translations. These improvements will be included in a firmware update in the near future. Michael L
(posted 2021-01-25 08:27:35.173) Hi,
how long does the startup take? I bought the previous model and that took extremely long to start up, compared to the older B/W screen models. soswald
(posted 2021-01-25 09:34:00.0) Dear Michael,
thank you for your feedback. The startup duration of the PM400 is typically a few seconds. zhaozhao mao
(posted 2020-12-08 01:01:28.267) 需要功率计表头和探头，1250~1550nm，mW级 wskopalik
(posted 2020-12-08 10:16:41.0) Thank you for your inquiry! We will contact you directly to provide further assistance. Juyoung Kim
(posted 2020-04-21 21:28:05.647) Dear PM400 support team,
I would like to confirm with the team with one question: Can C(++) talk to PM400 and get the power meter output and the instrument clock at the same time? I am pretty sure about this feature, but could you point me relevant C(++) functions? If possible, could you send me any example code for this basic operation? I would appreciate it much. Thank you.
Best regards,
Juyoung wskopalik
(posted 2020-04-22 11:49:39.0) This is a response from Wolfgang at Thorlabs. Thank you very much for your inquiry!
You would need to use two commands in this case. At first, you need to use one of the measurement commands, e.g. "TLPM_measPower" or "TLPM_measEnergy" depending on the sensor you use. After that, you can read the time by using "TLPM_getTime". This command is available on PM100D, PM200, and PM400 power meters and returns the time as it is set on the power meter. Alternatively, you can also read the time which is set on your computer by using a C/C++ library.
I will contact you directly to provide further assistance. Matt Dabrowski
(posted 2020-03-04 16:55:00.953) I am using a PM400. Recently, I went to update the firmware, and I connected the PM400 to the computer. When I used the latest OPM software to update the firmware I always got the following warning: "user abort the download operation" but I haven't done anything. Hoping for your answer. Thanks. Regards, Matt Dabrowski dpossin
(posted 2020-03-06 10:05:31.0) Dear Matt,
Thank you for your feedback. We are currently working on an firmware revision to eliminate this issue. We already contacted you regarding an solution. We will upload an firmware update on the website as soon as possible. user
(posted 2018-05-24 12:34:50.27) On your old PM100 Powermeters the display backlight could be turned off. Can the display on the PM400 also be turned off, while continuing to capture data via LabView/USB? mvonsivers
(posted 2018-06-07 03:56:07.0) This is a response from Moritz at Thorlabs. Thank you for your inquiry. The display cannot be completely turned off but the brightness can be dimmed to 1%. zahariev
(posted 2018-03-23 09:42:41.347) The power meter do the great job.
However I have a comment. Even been specified in the shipping list, the idea to sell it without power adapter (charger) could cos some inconvenience. swick
(posted 2018-04-16 04:40:04.0) This is a response from Sebastian at Thorlabs. Thank you for the feedback. We are glad to hear you are happy with our PM400.
The PM400 includes a USB cable which can be used to charge the device via USB ports. I understand that it would be helpful to have an USB charger included to the PM400. We will internally discuss your comment. arkke.eskola
(posted 2016-10-27 13:14:48.693) Hi,
I am thinking to buy PM400. Important option for my application would be to control it using LabVIEW, in my case LabVIEW2015. Do you have LabVIEW2015 drivers for PM400?
Thanks,
Arkke Eskola wskopalik
(posted 2016-10-28 03:59:43.0) This is a response from Wolfgang at Thorlabs. Thank you for your inquiry.
We provide LabView drivers as well as drivers for C/C++ and DotNet for the PM400. They are included in the installation package you can find here on the website.
I will contact you directly to provide further details. |
Thorlabs offers a wide selection of power and energy meter consoles and interfaces for operating our power and energy sensors. Key specifications of all of our power meter consoles and interfaces are presented below to help you decide which device is best for your application. We also offer self-contained wireless power meters and compact USB power meters.
When used with our C-series sensors, Thorlabs' power meter consoles and interfaces 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 consoles and interfaces are also capable of providing a readout of the current or voltage delivered by the sensor. Select models also feature an analog output.
Consoles
| Item # | PM100A | PM100D | PM400 | PM5020 |
|---|---|---|---|---|
| (Click Photo to Enlarge) |  |
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| Key Features | Analog Power Measurements | Digital Power and Energy Measurements | Digital Power and Energy Measurements, Touchscreen Control | Dual Channel |
| Compatible Sensors | Photodiode and Thermal Power | Photodiode Power, Thermal Power, and Pyroelectric Energya | Photodiode Power, Thermal Power, Thermal Power and Position, and Pyroelectric Energya | Photodiode Power, Thermal Power, Thermal Power and Position, and Pyroelectric Energy |
| 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) |
5.35" x 3.78" x 1.16" (136.0 mm x 96.0 mm x 29.5 mm) |
9.97" x 4.35" x 11.56" (253.2 mm x 110.6 mm x 293.6 mm) |
| Channels | 1 | 2 | ||
| External Temperature Sensor Input (Sensor not Included) | - | - | Readout and Record Temperature Over Time | Readout and Record Temperature Over Time |
| External Humidity Sensor Input (Sensor not Included) | - | - | Readout and Record Humidity Over Time | Readout and Record Humidity Over Time |
| Input/Output Ports | - | 4 GPIO, Programmable | 4 Configurable Digital I/O Channels | |
| Shutter Control | - | - | - | Support for SH05R(/M) or SH1(/M) Optical Shutter with Interlock Input |
| Fan Control | - | - | - |  |
| Source Spectral Correction | - | - | |
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| Attenuation Correction | - | - | |
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| External Trigger Input | - | - | - | |
| Display | ||||
| Type | Mechanical Needle and LCD Display with Digital Readout | 320 x 240 Pixel Backlit Graphical LCD Display | Protected Capacitive Touchscreen with Color 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) |
3.7" x 2.1" (95 mm x 54 mm) |
4.32" x 2.43" (109.7 mm x 61.6 mm) |
| Refresh Rate | 20 Hz | 10 Hz (Numerical) 25 Hz (Analog Simulation) |
25 Hz | |
| Measurement Viewsb | ||||
| Numerical | |
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| Mechanical Analog Needle | |
- | - | - |
| Simulated Analog Needle | - | |
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| Bar Graph | - | |
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| Trend Graph | - | |
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| Histogram | - | |
- | - |
| Statistics | |
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| Memory | ||||
| Type | - | SD Card | NAND Flash | SD Card |
| Size | - | 2 GB | 4 GB | 8 GB |
| Power | ||||
| Battery | LiPo 3.7 V 1300 mAh | LiPo 3.7 V 2600 mAh | - | |
| External | 5 VDC via USB or Included AC Adapter | 5 VDC via USB | Line Voltage: 100 - 240 V | |
Interfaces
| Item # | PM101 | PM102 | PM103 | PM101A | PM102A | PM103A | PM101R | PM101U | PM102U | PM103U | PM100USB |
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| (Click Photo to Enlarge) |  |
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| Operation Protocol | USB, RS232, UART, and Analog |
USB and Analog SMA | USB and RS232 |
USB Operation | USB | ||||||
| Sensor Compatibility | |||||||||||
| Photodiode | |
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| Thermal Power | |
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| Thermal Position & Power | - | |
- | - | |
- | - | - | |
- | - |
| Pyroelectric | - | - | |
- | - | |
- | - | - | |
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| Key Features | |||||||||||
| C-Series Sensor DE-9 Connector |
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| USB Connector | Lockable | Lockable | Lockable | Lockable | Not Lockable | ||||||
| Serial DE-9 Connector | - | - | |
- | - | ||||||
| SMA Connector(s) | - | 1 Analog Power Output | 3 Ports: Power, X-Position, and Y-Position | 3 Ports: AO1, AO2, and Digital I/O (Configurable as External Trigger Input) |
- | - | - | ||||
| DA-15 Universal Connector with 2 Auxiliary I/O Ports |
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GPIO Ports Also Configurable as Trigger Input (Pin 2) or for Pass/Fail Analysis (Pin 3) | - | - | - | - | ||||
| External Temperature Sensor Input (Sensor Not Included) |
NTC Thermistor | - | - | - | - | ||||||
| Display | |||||||||||
| Type | No Built-In Display; Controlled via GUI for PC | ||||||||||
| Refresh Rateb | Up to 1000 Hz | Up to 1000 Hz | Up to 1000 Hz | Up to 1000 Hz | Up to 300 Hz | ||||||
| Measurement Viewsc | |||||||||||
| Numerical | Requires PC | ||||||||||
| Simulated Analog Needle | Requires PC | ||||||||||
| Bar Graph | Requires PC | ||||||||||
| Trend Graph | Requires PC | ||||||||||
| Histogram | Requires PC | ||||||||||
| Statistics | Requires PC | ||||||||||
| Memory | |||||||||||
| Type | Internal Non-Volatile Memory for All Settings |
Internal Non-Volatile Memory for All Settings |
Internal Non-Volatile Memory for All Settings | Internal Non-Volatile Memory for All Settings |
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| Power | |||||||||||
| External | 5 VDC via USB or 5 to 36 VDC via DA-15 Pins 1 and 9 |
5 VDC via USB | 5 VDC via USB | 5 VDC via USB | 5 VDC via USB | ||||||
Zoom
Click to Enlarge PM400 with S120C Photodiode Sensor (Available Below) and TSP-TH Temperature Sensor
- Compact Power Meter Console
- Projected Capacitive Touchscreen with Multi-Touch Technology
- Compatible with Over 30 Power and Energy Sensors (Available Below)
- Inputs for Third-Party and Custom Sensors
- 4 GB Internal Memory
- USB 2.0 Interface for Control via PC
Thorlabs' PM400 power meter console is compatible with over 30 power, position, and energy sensors, available below. When used with these sensors, the console will automatically detect and read the sensor calibration information stored in the sensor connector and combine this data with a user-set measurement wavelength to provide calibrated power or energy measurements. The console can also be used with third-party or custom sensors that meet the compatibility requirements outlined on the Specs tab.
Thorlabs offers a recalibration service for the PM400 power and energy meter's electronics (see Item # CAL-PM1 below). Alternatively, if ordering a recalibration for a compatible sensor, the PM400 console recalibration can be included with the sensor recalibration at no additional cost. See the bottom of the page for ordering information.
Click to Enlarge
S120C and CP44F 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 # CAL-UVPD for UV-extended Si sensors, Item # CAL-PD for Si sensors and Item # CAL-IRPD for Ge sensors).
| Item #a | S120VC | S120C | S121C | S122Ch |
|---|---|---|---|---|
| Sensor Image (Click the Image to Enlarge) |
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| 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-FC2, S120-FC, S120-APC2, S120-APC, S120-SMA, S120-ST, S120-LC, and S120-SC (Not Included) | |||
| Compatible Consoles | PM400, PM100D, PM100A, and PM5020 | |||
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM103, PM103A, PM103U, and PM100USB | |||
Click for Details 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-UVPD2 for UV-extended Si sensors, Item #CAL-PD2 for Si sensors, and Item # CAL-IRPD2 for Ge sensors).
| Item #a | S130VC | S130C | S132C | |
|---|---|---|---|---|
| Sensor Image (Click the Image to Enlarge) |
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| 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 |
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| 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-FC2, S120-FC, S120-APC2, S120-APC, S120-SMA, S120-ST, S120-SC, and S120-LC FBSM: Integrate Sensor into FiberBench Setups |
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| Compatible Consoles | PM400, PM100D, PM100USB, PM100A, and PM5020 | |||
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM103, PM103A, PM103U, and PM100USB | |||
| Item #a | S116C | |
|---|---|---|
| Sensor Image (Click the Image to Enlarge) |
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| Aperture Size | Ø6 mm | |
| Wavelength Range | 400 - 1100 nm | |
| Power Range | 20 nW - 50 mW | |
| Detector Type | Si Photodiode | |
| Linearity | ±0.5% | |
| Resolution | 1 nWb | |
| Measurement Uncertaintyc | ±3% (451 - 1000 nm) ±5% (400 - 450 nm, 1001 - 1100 nm) |
|
| Responsivityd (Click for Plot) |
 Raw Data |
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| Coating/Diffuser | Absorptive ND (NG9) | |
| Housing Dimensions (L x W x T) |
70.0 mm x 11.0 mm x 8.9 mm; 10.0 mm Width and 4.5 mm Thickness on Sensor Side |
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| Active Detector Area | 7 mm x 7 mm | |
| Cable Length | 1.5 m | |
| Mounting Threads | 2 Universal 8-32 / M4 Taps (One on the Back, One on the Bottom), Posts Not Included |
|
| Adapters (Not Included) |
SM05A29: Add SM05 Thread to Aperture Fiber Adapters Compatible with SM05A29 Adapter: PM20-FC2, PM20-FC, PM20-APC2, PM20-APC, PM20-SMA, PM20-ST, PM20-SC, and PM20-LC |
|
| Compatible Consoles | PM400, PM100D, PM100A, and PM5020 | |
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM103, PM103A, PM103U, and PM100USB | |
- For Optical Power Measurements in Tiny Spaces Such as 16 mm Cage Systems
- Wavelength Range: 400 - 1100 nm
- Very Slim Design: 10.0 mm Wide and 4.5 mm Thin on Sensor Side
- Silicon Photodiode with Ø6 mm Sensor Aperture
- Designed for Power Measurements for Low Power Lasers
- Post Mountable via 8-32 (M4) Taps
- SM05A29 Adapter with External SM05 (0.535"-40) Threading Available Separately (More Details)
- See the Full Web Presentation for More Information
The S116C Compact Slim Photodiode Power Sensor is designed to take optical source power measurements in locations where space and accessibility are at a premium. The 4.5 mm thin photodiode sensor can fit between the rods of a 16 mm cage system, as seen in the application photo below, as well as through the side openings of our slotted Ø1/2" lens tubes (Item #s SM05L20C and SM05L30C). This sensor also features a Ø6 mm sensor aperture.
A separately available SM05A29 adapter can be attached by two 0.05" (1.3 mm) hex setscrews to an S116C power sensor to mount fiber adapters, light shields, filters or any other SM05-threaded (0.535"-40) mechanics or optics. The adapter mounted on the S116C power sensor is shown below.
Each sensor is shipped with NIST- and PTB-traceable calibration data. The included data is determined with the help of a certified reference diode, which corresponds to the spectral range of the sensor to be calibrated. Thorlabs offers a recalibration service for these photodiode power sensors, which can be ordered below (see Item # CAL-PD for Si sensors).
Click to Enlarge S116C Sensor in a 16 mm Cage System
| Item #a | S170C |
|---|---|
| Sensor Image (Click Image to Enlarge) |
 |
| 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) |  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, PM100D, PM100A, and PM5020 |
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM103, PM103A, PM103U, and PM100USB |
- 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 CAL-PD 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.
| Item #a | S175C |
|---|---|
| Sensor Image (Click Image to Enlarge) |
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| 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, PM100D, PM100A, and PM5020 |
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM102, PM102A, PM102U, and PM100USB |
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.
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-THPY 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.
Click to Enlarge
S142C and S140-BFA Bare Fiber Adapter (Sold Separately)
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 # CAL-PD for Si sensors, Item # CAL-IRPD for InGaAs sensors, and Item # CAL-MIRPD for extended InGaAs or MCT sensors.
| Item #a | S140C | S142C | S144C | S145C | S146C | S148C | S180C |
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| Sensor Image (Click the Image to Enlarge) |
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| 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 | Extended InGaAs Photodiode | MCT (HgCdTe) Photodiode |
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| 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) |
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| 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 |
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| 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-FC2, S120-APC2, S120-APC, S120-SMA, S120-ST, S120-SC, S120-LC, and S140-BFA Bare Fiber Adapter (Not Included) |
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| Compatible Consoles | PM400, PM100D, PM100A, and PM5020 | ||||||
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM103, PM103A, PM103U, and PM100USB | ||||||
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 FC/APC, 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 # CAL-PD for Si sensors and Item # CAL-IRPD for InGaAs sensors).
*ST® is a registered trademark of Lucent Technologies, Inc.
| Item #a | S150C | S151C | S154C | S155C |
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| Sensor Image (Click the Image to Enlarge) |
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| 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-FC2, PM20-APC2, PM20-APC, PM20-ST, PM20-SC, and PM20-LC |
Included: PM20-FC Optional: PM20-FC2, PM20-APC2, PM20-APC, PM20-SMA, PM20-ST, PM20-SC, and PM20-LC |
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| Compatible Consoles | PM400, PM100D, PM100A, and PM5020 | |||
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM103, PM103A, PM103U, and PM100USB | |||
| Item #a | S401C | S405C |
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| Sensor Image (Click the Image to Enlarge) |
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| 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) |
(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, PM100D, PM100A, and PM5020 | |
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM102, PM102A, PM102U, and PM100USB | |
- 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-THPY).
Click to Enlarge
The S405 shares the same absorption curve with the S415C, S425C, and S245C-L. (All are sold below.)
| Item #a | S415C | S425C |
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| Sensor Image (Click Image to Enlarge) |
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| 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) |
(2.00" x 2.00" x 1.38") |
(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, PM100D, PM100A, and PM5020 | |
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM102, PM102A, PM102U, and PM100USB | |
- 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-THPY).
Click to Enlarge
The absorption curves of each of the thermal power sensors designed for use with low and medium power optical sources.
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-THPY).
| Item #a | S350C | S425C-L | S322C |
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| Sensor Image (Click Image to Enlarge) |
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| 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, PM100D, PM100A, and PM5020 | ||
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM102, PM102A, PM102U, and PM100USB | ||
| Item #a | S370C | S470C |
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| Sensor Image (Click the Image to Enlarge) |
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| 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) |
(2.95" x 2.95" x 2.02") |
(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 | - | |
| Compatible Consoles | PM400, PM100D, PM100A, and PM5020 | |
| Compatible Interfaces | PM101, PM101A, PM101R, PM101U, PM102, PM102A, PM102U, and PM100USB | |
- 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-THPY).
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.
| Item #a | S440C | S442C |
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| Sensor Image (Click the Image to Enlarge) |
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| Wavelength Range | 190 nm - 20 µm | |
| Optical Power Range | 0.5 mW - 5 W | 10 mW - 50 W |
| Input Aperture Size | 17 mm x 17 mm | Ø17.5 mm |
| Max Optical Power Density | 1.5 kW/cm2 | |
| Detector Type | Four Thermopiles in Quadrant Configuration | |
| Linearity | ±1% | |
| Resolutionb | 50 µW | 1 mW |
| Measurement Uncertaintyc | ±5% at 1064 nm; ±7% for 250 nm - 17 µm |
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| Position Resolution | 5 µm | 10 µm |
| Position Accuracyd | 50 µm (Ø1 mm Circle) 200 µm (Ø6 mm Circle) |
100 µm (Ø1 mm Circle) 300 µm (Ø6 mm Circle) |
| Position Repeatabilityd | 15 µm (Ø1 mm Circle) 100 µm (Ø6 mm Circle) |
25 µm (Ø1 mm Circle) 150 µm (Ø6 mm Circle) |
| Response Timee | <1.1 s | <0.6 s |
| Cooling | Convection (Passive) | |
| Housing Dimensions (Without Adapter) |
40.6 mm x 40.6 mm x 8.9 mm (1.60" x 1.60" x 0.35") |
100.0 m x 100.0 mm x 57.8 mm (3.94" x 3.94" x 2.28") |
| Temperature Sensor (In Sensor Head) |
NTC Thermistor | |
| Cable Length | 1.5 m | |
| Post Mounting | One 8-32 / M4 Universal Tap | Two 8-32 / M4 Universal Taps |
| 30 mm Cage Mounting | Four Ø6 mm Through Holes | - |
| Aperture Threads | - | Internal SM1 (1.035"-40) |
| Accessories | - | Externally SM1-Threaded Adapter |
| Compatible Consoles | PM400 and PM5020 | |
| Compatible Interfaces | PM102, PM102A, and PM102U | |
- Segmented Quadrant Position-Sensing Detector
- S440C: High Sensitivity; 30 mm Cage System Compatible
- S442C: High Power; Heat Sink Included
- See the Full Web Presentation for More Information
The S440C and S442C position sensors use thermopiles to obtain high-resolution measurements of a beam's position and power. The detector area consists of four thermopile-based sensors arranged as quadrants of a square. The quadrants are mechanically coupled but electrically isolated; thus, heat is free to flow across the entire active area, but the signal from each quadrant measures the response in only that quadrant's thermopile. The XY position of the beam is determined by comparing the signal intensity measured for each quadrant.
The S440C detector is optimized for high sensitivity from 0.5 mW to 5 W. The housing features four Ø6 mm through holes for compatibility with 30 mm cage systems, as well as an 8-32 / M4 universal tap for post mounting. The S442C detector is compatible with higher power levels from 10 mW up to 50 W. The housing includes a heat sink for superior heat dissipation, as well as two 8-32 / M4 universal taps for post mounting.
Both detectors feature C-Series connectors which contain NIST- and PTB-traceable calibraion data. The sensors can be controlled using the PM400 or PM5020 power meter console or PM102 series power meter interfaces. The system can be configured to display a visual trace of the position over time, a graph of the X and Y positions over time, a table of measurement statistics, or a simple numerical readout of the incident power. See the full web presentation and the PM400 manual for details.
For information on recalibration services for these products, please contact Tech Support.
Click to Enlarge
Click Here for Raw Data
The wavelength range of the data in this graph is limited by the detector used during testing. The thermal position detectors are capable of operating at up to 20 µm.
| Item #a | ES111C | ES120C | ES145C |
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| Sensor Image (Click the Image to Enlarge) |
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| Input Aperture Size | Ø11 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 |
| Max Repetition Rateb | 40 Hz | 30 Hz | 30 Hz |
| Max Power Density (Pulse Width) |
8 MW/cm2 (10 ns Pulse) |
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| Max Pulse Energy Density (Pulse Width) |
0.15 J/cm2 (1 µs Pulse) |
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| Coating (Click for Plot) | Black Broadband | ||
| Resolution | 100 nJ | 1 µJ | 1 µJ |
| Linearity | ±1% | ||
| Measurement Uncertainty | ±5% @ 190 nm - 25 µm | ±5% @ 185 nm - 25 µm | ±5% @ 185 nm - 25 µm |
| Housing Dimensions | Ø36 mm x 16 mm | Ø50 mm x 18 mm | Ø75 mm x 21 mm |
| Active Detector Area | 95.0 mm2 | 314.2 mm2 | 1590.4 mm2 |
| Cable Length | 1.5 m (60") | ||
| Post Mounting | 8-32 Mounting Thread, 8-32 and M4 Insulating Adapters Included | ||
| Cage Mounting | N/A | Four 4-40 Threaded Holes for 30 mm Cage Systems |
N/A |
| Compatible Consoles | PM400, PM100D, and PM5020 | ||
| Compatible Interfaces | PM103, PM103A, PM103U, and PM100USB | ||
- For General Purpose Optical Pulse Measurements
- Black Broadband Coating with Flat Response Over a Wide Wavelength Range
- Ø11 mm, Ø20 mm, or Ø45 mm Sensor Area
- BNC Connector for Oscilloscope Use
- Each Sensor Includes:
- C-Series Connector Adapter for Use with Compatible Thorlabs' Consoles (See Table to the Right or the Console Selection Tab)
- Two Electrically Isolating Post Adapters (One Imperial and One Metric)
- See the Full Web Presentation for More Information
The ES1xxC Standard 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. The black broadband coating on these sensors is ideal for low power, wavelength-independent energy measurements due to its flat absorption profile (see the table to the right). Large sensor areas of Ø11 mm, Ø20 mm, or Ø45 mm aid with easy alignment. The sensors can be connected directly to an oscilloscope with a 1 MΩ input resistance via the BNC connector. To accommodate higher repetition rates when connected to an oscilloscope, the load resistance can be reduced. Each energy sensor includes a BNC to C-Series adapter that contains NIST- and PTB-traceable calibration data.
Thorlabs offers a recalibration service for these energy sensors, which can be ordered below (see Item # CAL-THPY).
Click to Enlarge
ES220C Sensor Mounted in a 30 mm Cage System
- For High-Energy Optical Pulse Measurements Up to 15 J
- Ceramic Coating with High Damage Threshold for High-Energy-Density (Up to 0.45 J/cm2) Lasers
- Ø20 mm or Ø45 mm Sensor Area
- BNC Connector for Oscilloscope Use
- Each Sensor Includes:
- C-Series Connector Adapter for Use with Compatible Thorlabs' Consoles (See Table Below or the Console Selection Tab)
- Two Electrically Isolating Post Adapters (One Imperial and One Metric)
- See the Full Web Presentation for More Information
The ES2xxC High-Energy 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 ceramic coating is used for high energy measurements as high as 3 J for the ES220C sensor or 15 J for the ES245C sensor. Large Ø20 mm or Ø45 mm sensor areas aid with easy alignment. The sensors can be connected directly to an oscilloscope with a 1 MΩ input resistance via the BNC connector. To accommodate higher repetition rates when connected to an oscilloscope, the load resistance can be reduced. Each energy sensor also includes a BNC to C-Series adapter that contains NIST- and PTB-traceable calibration data.
Thorlabs offers a recalibration service for these energy sensors, which can be ordered below (see Item # CAL-THPY).
| Item #a | ES220C | ES245C |
|---|---|---|
| Sensor Image (Click the Image to Enlarge) |
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| Input Aperture Size | Ø20 mm | Ø45 mm |
| Wavelength Range | 0.185 - 25 µm | |
| Energy Range | 500 µJ - 3 J | 1 mJ - 15 J |
| Max Repetition Rateb | 30 Hz | 30 Hz |
| Max Power Density (Pulse Width) |
65 MW/cm2 (7 ns Pulse @ 355 nm) |
|
| Max Pulse Energy Density (Pulse Width) |
0.45 J/cm2 (7 ns Pulse @ 355 nm) |
|
| Coating (Click for Plot) | Ceramic | |
| Resolution | 25 µJ | 50 µJ |
| Linearity | ±1% | |
| Measurement Uncertainty | ±5% @ 0.185 - 25 µm | |
| Housing Dimensions | Ø50 mm x 18 mm | Ø75 mm x 21 mm |
| Active Detector Area | 314.2 mm2 | 1590.4 mm2 |
| Cable Length | 1.5 m (60") | |
| Post Mounting | 8-32 Mounting Thread, 8-32 and M4 Insulating Adapters Included | |
| Cage Mounting | Four 4-40 Threaded Holes for 30 mm Cage Systems | N/A |
| Compatible Consoles | PM400, PM100D, and PM5020 | |
| Compatible Interfaces | PM103, PM103A, PM103U, and PM100USB | |
| Item #a | ES308C | ES312C | ES412C |
|---|---|---|---|
| Sensor Image (Click the Image to Enlarge) |
 |
 |
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| Input Aperture Size | Ø8 mm | Ø12 mm | Ø12 mm |
| Wavelength Range | 0.185 - 25 µm | 0.185 - 25 µm | 0.185 - 2.5 µm |
| Energy Range | 500 µJ - 1 J | 100 µJ - 1 J | 50 µJ - 500 mJ |
| Max. Repetition Rateb | 1 kHz | 250 Hz | 2 kHz |
| Max Power Density (Pulse Width) |
8 MW/cm2 (10 ns Pulse) |
5 MW/cm2 (10 ns Pulse) |
|
| Max Pulse Energy Density (Pulse Width) |
80 mJ/cm2 (10 ns Pulse) |
50 mJ/cm2 (10 ns Pulse) |
|
| Coating (Click for Plot) |
Black Broadband | Metal | |
| Resolution | 5 µJ | 1 µJ | 1 µJ |
| Linearity | ±1% | ||
| Measurement Uncertainty | ±5% @ 0.185 - 25 µm | ±5% @ 0.185 - 2.5 µm | |
| Housing Dimensionsc | Ø38 mm x 15 mm | Ø38 mm x 15 mm | Ø38 mm x 15 mm |
| Active Detector Area | 50.3 mm2 | 113.1 mm2 | 113.1 mm2 |
| Cable Length | 1.5 m (60") | ||
| Post Mounting | 8-32 and M4 Combi Mounting Thread | ||
| Aperture Thread | External SM1 (1.035"-40) Thread Thread Depth: 3.0 mm (0.12") |
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| Compatible Consoles | PM400, PM100D, and PM5020 | ||
| Compatible Interfaces | PM103, PM103A, PM103U, and PM100USB | ||
- For Measurements of Repetition Rates up to 10 kHz
- Two Coating Options:
- Black Broadband Coating with Flat Response from 185 nm to 25 µm
- Metal Coating for 185 nm to 2.5 µm to Support Detecting Repetition Rates up to 2 kHz*
- Ø8 mm or Ø12 mm Sensor Areas
- BNC Connector for Oscilloscope Use
- Includes C-Series Connector Adapter for Use with Compatible Thorlabs' Consoles (See Table to the Right or the Console Selection Tab)
- See the Full Web Presentation for More Information
The ES3xxC and ES412C Fast Pyroelectric Sensors are designed to measure pulsed coherent and incoherent sources with high repetition rates up to 2 kHz. Pyroelectric sensors are not suited for CW measurements, as they convert energy from light pulses into voltage pulses. The ES3xxC sensors have a black broadband that provides a flat response from 185 nm to 25 µm, and, depending on the sensor size, can support measurements of repetition rates up to 1 kHz. The metal-coated ES412C sensor can detect repetition rates up to 2 kHz over a more limited wavelength range of 185 nm to 2.5 µm. Ø8 mm or Ø12 mm sensor areas are available, and each input aperture has external SM1 (1.035"-40) threads for compatibility with our SM1-threaded lens tubes. These energy sensors have BNC connectors for connection to an oscilloscope with a 1 MΩ load input resistance; using these sensors with a different load resistance may lead to reduced speed. A BNC to C-Series adapter containing NIST- and PTB-traceable calibration data is also included with each sensor.
Thorlabs offers a recalibration service for these energy sensors, which can be ordered below (see Item # CAL-THPY).
*To detect repetition rates up to 10 kHz, Thorlabs also offers the ES408C Pyroelectric Sensor, which can be controlled using the PM103 Series Power and Energy Meter Interfaces; as the PM400 console, PM100D console, and PM100USB interface can only support sensors with repetition rates up to 3 kHz, they should not be used with the ES408C sensor.
| Calibration Service Item # | Compatible Sensors |
|---|---|
| CAL-UVPD | S120VC |
| CAL-PD | S116C, S120C, S121C, S170C, S140C, S142C, S150C, S151C, PM16-120, PM16-121, PM16-140 |
| CAL-UVPD2 | S130VC |
| CAL-PD2 | S130C, PM16-130, PM160 |
| CAL-IRPD | S122C, S144C, S145C, S146C, S154C, S155C, PM16-122, PM16-144 |
| CAL-IRPD2 | S132C |
| CAL-MIRPD | S148C, S180C |
Thorlabs offers recalibration services for our photodiode optical power sensors. To ensure accurate measurements, we recommend recalibrating the sensors annually. Recalibration of a single-channel power and/or energy meter console or interface is included with the recalibration of a sensor at no additional cost. If you wish to calibrate one or more sensors with a dual-channel console, each sensor and console calibration service will need to be purchased individually.
Refer to the table to the right for the appropriate calibration service Item # that corresponds to your power sensor.
Requesting a Calibration
Thorlabs provides two options for requesting a calibration:
- Complete the Returns Material Authorization (RMA) form. When completing the RMA form, please enter your name, contact information, the Part #, and the Serial # of each item being returned for calibration; in the Reason for Return field, select "I would like an item to be calibrated." All other fields are optional. Once the form has been submitted, a member of our RMA team will reach out to provide an RMA Number, return instructions, and to verify billing and payment information.
- Select the appropriate sensor calibration Item # below, enter the Part # and Serial # of the sensor that requires recalibration, and then Add to Cart. If you would like a console calibrated with your sensor, repeat this process for Item # CAL-PM1 or CAL-PM2 below, entering the console Item # and Serial #. A member of our RMA team will reach out to coordinate the return of the item(s) for calibration. Note that each console calibration Item # represents the cost of calibrating a console alone; if requesting a single-channel console calibration with a sensor calibration, the appropriate discount will be applied when your request is processed. Should you have other items in your cart, note that the calibration request will be split off from your order for RMA processing.
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.
| Sensor Type | Sensor Item #s |
|---|---|
| Thermal Power | S175C, S302Ca, S305Ca, S310Ca, S314Ca,S322C, S350C, S370C, S401C, S405C, S415C, S425C, S425C-L, S470C, PM160T, PM160T-HP, PM16-401, PM16-405 |
| Pyroelectric Energy | ES111C, ES120C, ES145C, ES220C, ES245C, ES308C, ES312C, ES408C, ES412C |
Thorlabs offers recalibration services for our Thermal Power and Pyroelectric Energy Sensors. To ensure accurate measurements, we recommend recalibrating the sensors annually. Recalibration of a single-channel power and/or energy meter console or interface is included with the recalibration of a sensor at no additional cost. If you wish to calibrate one or more sensors with a dual-channel console, each sensor and console calibration service will need to be purchased individually.
Please note that the CAL-THPY recalibration service cannot be used for our Thermal Position & Power Sensors; recalibration for these sensors can be requested by contacting Tech Support. The table to the upper right lists the sensors for which the CAL-THPY recalibration service is available.
Requesting a Calibration
Thorlabs provides two options for requesting a calibration:
- Complete the Returns Material Authorization (RMA) form. When completing the RMA form, please enter your name, contact information, the Part #s, and the Serial #s of all sensors or consoles being returned for calibration; in the Reason for Return field, select "I would like an item to be calibrated." All other fields are optional. Once the form has been submitted, a member of our RMA team will reach out to provide an RMA Number, return instructions, and to verify billing and payment information.
- Enter the Part # and Serial # of the item that requires recalibration below and then Add to Cart. If you would like a console calibrated with your sensor, repeat this process for Item # CAL-PM1 or CAL-PM2 below, entering the console Item # and Serial #. A member of our RMA team will reach out to coordinate the return of the item(s) for calibration. Note that each console calibration Item # represents the cost of calibrating a console alone; if requesting a single-channel console calibration with a sensor calibration, the appropriate discount will be applied when your request is processed. Should you have other items in your cart, note that the calibration request will be split off from your order for RMA processing.
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. Pyroelectric energy sensors returned for recalibration or servicing must include the separate BNC to DB9 adapter, which contains the sensor EEPROM.
| Calibration Service Item # | Compatible Consoles & Interfaces |
|---|---|
| Single-Channel | |
| CAL-PM1 | PM100D, PM100A, PM400, PM100USB, PM101 Series, PM102 Series, PM103 Series |
| Dual-Channel | |
| CAL-PM2 | PM5020, Previous-Generation PM320E |
These recalibration services are for the power and/or energy meter electronics of our consoles and interfaces. To ensure accurate measurements, we recommend recalibrating annually. Recalibration of a single-channel console or interface is included with these sensor recalibration services at no additional cost. If you wish to calibrate one or more sensors with a dual-channel console, each sensor and console calibration service will need to be purchased individually.
The table to the upper right lists the power and/or energy meter consoles and interfaces that can be calibrated using the CAL-PM1 and CAL-PM2 recalibration services.
Requesting a Calibration
Thorlabs provides two options for requesting a calibration:
- Complete the Returns Material Authorization (RMA) form. When completing the RMA form, please enter your name, contact information, the Part #, and the Serial # of each item being returned for calibration; in the Reason for Return field, select "I would like an item to be calibrated." All other fields are optional. Once the form has been submitted, a member of our RMA team will reach out to provide an RMA Number, return instructions, and to verify billing and payment information.
- Select the appropriate Item # below, enter the Part # and Serial # of the item that requires recalibration, and then Add to Cart. If you would like to calibrate one or more sensors with your console, repeat this process for the appropriate sensor recalibration service above, entering the console Item # and Serial #. A member of our RMA team will reach out to coordinate return of the item(s) for calibration. Note that each console calibration Item # represents the cost of calibrating a console alone; if requesting a single-channel console calibration with a sensor calibration, the appropriate discount will be applied when your request is processed. Should you have other items in your cart, note that the calibration request will be split off from your order for RMA processing.
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.
Multi-Touch Power & Energy Meter Console
