Laser Power and Energy Meter, USB Only Interface
|Compatible Sensors||Photodiode, Thermal, and Pyroelectric|
|Optical Power Rangea||100 pW to 200 W|
|Optical Energy Rangea||3 µJ to 15 J|
|Available Sensor Wavelength Rangea||185 nm - 25 μm|
|GUI Display Refresh Rate||300 Hz|
|Bandwidtha||DC - 100 kHz|
|Photodiode Sensor Rangeb||50 nA - 5 mA|
|Thermopile Sensor Rangeb||1 mV - 1 V|
|Pyroelectric Sensor Rangeb||100 mV - 100 V|
- Compact Console Interfaces Power and Energy Sensors with a PC
- Same Functionality as the PM100D Console
- Advanced Measurement and Display Features
- Compatible with over 25 Photodiode, Thermal, and Pyroelectric Sensors
- Sensor and USB PC Connections with Indicator Lights
- No External Power Supply Required
The PM100USB Console is a compact power and energy meter interface which allows PC control of an attached power or energy sensor. It contains many of the same features as the PM100D and PM100A Consoles, except it does not have a display screen or built-in console controls. Instead, the console and sensor are completely controlled via a USB connection and the supplied software. The PM100USB converts the signal from the attached sensor and transfers it to the PC.
The PM100USB is compatible with more than 25 standard photodiode, slim photodiode, integrating sphere, fiber, thermal, and pyroelectric sensors (see Power Meter Compatibility Chart). Additionally, it allows the connection of unamplified anode or cathode grounded photodiodes with up to 5 mA photocurrent, thermal elements with a maximum output voltage of 1 V, and pyroelectric sensors with a maximum output voltate of 100 V. Depending on the connected sensor, it can measure optical powers in the range from 100 pW to 200 W and energy from 3 µJ to 15 J. When used together with the ultra compact S15xC Series fiber sensor, the PM100USB becomes a compact and portable fiber power meter that is ideal for multi sensor applications.
PM100USB Control Software
The PM100USB and connected sensor are controlled through a PC running the supplied software. The standard GUI offers three panels for the display of various numeric parameters, a larger main panel and two subpanels. The displayed parameter can be selected, i.e. power, energy and their min or max values as well as their units. The GUI offers data logging with graphical, tabular or histogram representation and statistical evaluation of the measurements. The data can be stored as a text file. A driver set for the integration into 3rd party software or customized applications is provided as well.
Like the PM100D the PM100USB features broad current and voltage measurement ranges and the capability of measuring power and energy. The AD converter allows for more measurement ranges of smaller spans, a higher acquisition rate, and higher precision. A selectable bandwidth of either 20 Hz or 100 kHz offers more flexibility and adaptability to specific measurement tasks while using photodiode sensors. The higher bandwidth is optimal for pulse-detection; the lower bandwidth offers better accuracy.
Additionally, the power meter can adapt to the thermal time constant of thermal sensors leading to significantly faster measurements with thermal sensors. Thermal sensors have an individual time constant that can vary greatly from unit to unit. Like the PM100D, the PM100USB can adjust to this individual constant for each sensor and thus minimize the response time of the system (sensor + console).
Fiber Power Meter Option
The compact, integrated, fiber sensors of the S15xC Series can be connected directly to the PM100USB turning the PM100USB into a compact, single unit fiber power meter. Any handling limitations due to cable movements or cable handling are avoided thus making this device ideal for multi-sensor applications that do not require a console but is controlled remotely via PC. The S150C offers exchangeable fiber adapters for FC, SMA, LC, SC, ST, and LC fiber connectors.
|Display Type||External PC - Windows Application or Driver Set|
|Display Screens||Windows Application Software Provided|
|GUI Refresh Rate||300 Hz|
|Compatible Sensors||All Photodiodes, Thermopiles, and Pyros|
See below for full sensor specs
|Time Constant Correction||<1 s|
|AD Converter||16 bit|
|Sensor Temperature Control||Thermistor|
|Temperature Range||-10 to 80 °C|
|Connector / Interface||Mini USB / USB2.0|
|Charger / DC Input||USB / PC Provided|
|Dimensions and Mounting|
|Dimensions (LxWxH)||95 mm x 63.5 mm x 32.5 mm|
|Operating Temperature||0 to 40 °C|
|Storage Temperature||-40 to 70 °C|
Sensor Compatibility Specs
|Detector Compatibility||Photodiode Sensors: S1xxC Series|
Photodiodes (Max 5 mA)
|Thermal Sensors: S3xxC Series|
Thermopiles (Max 1V)
|Pyroelectric Sensors: ESxxxC Series Pyros (Max 100V)|
|Measurement Ranges||6 Decades; 50 nA - 5 mA|
Ranges Selectable in W,
|4 Decades; 1 mV - 1 V|
Ranges Selectable in W,
|4 Decades; 100 mV - 100 V|
Ranges Selectable in J,
|Wavelength Ranges||200 nm - 1800 nm||190 nm - 25 μm||185 nm - 25 μm|
|Power / Energy Ranges||100 pW - 20 W||100 μW - 200 W||10 μJ - 15 J|
|Units||W, dBm, W/cm², A||W, dBm, W/cm², V||J, dBm, J/cm², V|
|Accuracy||±0.2% of Full Scale (5 µA - 5 mA) |
±0.5% of Full Scale (50 nA)
|±0.5% of Full Scale (10 mV - 1 V)|
±1% of Full Scale (1 mV)
|±0.5% of Full Scale (100 mV - 100 V)|
|Display Resolution||1 pA / Responsivity Value (A/W)||1 µV / Responsivity Value (V/W)||100 µV / Responsivity Value (V/W)|
|Bandwidth||DC - 100 kHz, Dependent on Sensor and Settings||DC - 10 Hz, Dependent on Sensor and Settings||DC - 30 Hz, Dependent on Sensor and Settings|
|Wavelength Correction||Sensor Dependent; nm (A/W)||Sensor Dependent; nm (V/W)||Sensor Dependent; nm (V/J)|
For a full list of the sensor head specifications please visit the Photodiode Power Sensors, Thermal Power Sensors, or Pyroelectric Energy Sensors pages. For other information, please contact tech support.
PD100USB Sensor Connector
|1||+5 V (Drive max 50 mA from this pin)|
|2||EEPROM Digital I/O|
|3||Photodiode Ground (Anode), Thermal and Pyro Sensor Ground, Analog Ground|
|5||Pyro-Electric Sensor +|
|7||PRESENT (Connect this pin via a 1kΩ - 10kΩ resistor to Pin 3 (AGND))|
|8||Thermal Sensor +|
USB Type Mini-B
USB Type Mini-B to Type A Cable Included
| ||Power Meter Consoles|
|Standard Photodiode Sensors|
|S120VC|| || || || || |
|S120C|| || || || || |
|S121C|| || || || || |
|S122C|| || || || || |
|Slim Photodiode Sensors|
|S130C|| || || || || |
|S130VC|| || || || || |
|S132C|| || || || || |
|Microscope Slide Photodiode Sensor|
|S170C|| || || || || |
|Integrating Sphere Photodiode Sensors|
|S140C|| || || || || |
|S142C|| || || || || |
|S144C|| || || || || |
|S145C|| || || || || |
|S146C|| || || || || |
|Fiber Photodiode Sensors|
|S150C|| || || || || |
|S151C|| || || || || |
|S154C|| || || || || |
|S155C|| || || || || |
|Standard Thermal Sensors|
|S302C|| || || || || |
|S310C|| || || || || |
|S314C|| || || || || |
|S322C|| || || || || |
|Slim Thermal Sensor|
|S305C|| || || || || |
|High-Sensitivity Thermal Sensor|
|S401C|| || || || || |
|Thermal Sensors for Eximer and YAG Lasers|
|S350C|| || || || || |
|S370C|| || || || || |
|ES111C|| || || ||-|| |
|ES120C|| || || ||-|| |
|ES145C|| || || ||-|| |
|ES220C|| || || ||-|| |
|ES245C|| || || ||-|| |
| ||Fully Compatible|
The PM100USB console is compatible with more than 25 photodiode, slim photodiode, integrating sphere, fiber, thermal, and pyroelectric sensors covering the UV to the MIR. Additionally an unamplified anode or cathode grounded photodiode, with up to 5 mA photocurrent, thermal elements with up to 1 V output voltage, and pyroelectric sensors with max. 100 V output may be interfaced with the PM100USB. Depending on the application the sensor can measure optical powers in the range from 100 pW to 200 W and energy from 3 µJ to 15 J. A complete list of Thorlabs' C-Series sensors with selected specifications can be found on the Sensor Selection tab.
Please see the Applications tab for common sensor arrangements.
A selectable bandwidth of either 20 Hz or 100 kHz offers more flexibility and adaptability to specific measurement tasks while using photodiode sensors. The higher bandwidth is optimal for pulse-detection; the lower bandwidth offers better accuracy. Power and energy density can also be displayed based on user input beam areas. Optical sources may be attenuated / gained electronically through the console. Note: Attenuating the source through the console will not attenuate the light at the detector and damage may still occur above the detector threshold power.
Thorlabs' complete line of sensor heads are listed in the table to the right. Utilizing the variety of sensors, the PM100D can measure optical power and energy from CW and pulsed sources. Sensors are available for monitoring low power CW laser diode emission to high power excimer, YAG, and CO2 laser pulses.
The PM100USB can be used in the lab, as well as in the field with our fiber coupled sensors. Please see the Applications tab for a small sample of possible configurations. Contact tech support with any applications based questions.
Additionally, the PM100USB communicates with the sensor and accesses spectral response functions, time constants, and other information specific to the detector. The PM100USB then corrects for spectral response functions automatically. The power meter also accounts for the detector time constants (which can vary greatly, especially for Thermal sensors) for each sensor and can minimizes the response time of the system (sensor + console), thus greatly improving the efficiency of the unit.
Sensor Upgrade Service
Thorlabs' Sensors and PM100USB Console 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 PM100USB. Please contact our tech support team for details.
Click to Enlarge
The PM160 wireless power meter, shown here with an iPad mini (not included), can be remotely operated using Apple mobile devices.
The full line of Thorlabs' Power and Energy Sensors are outlined in the table below. The photodiode and thermal sensors are compatible with all of Thorlabs' current line of power meter consoles. The pyroelectric sensors are compatible with all of our current power meter consoles except for the PM100A Analog Power Meter Console.
- Photodiode 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 are constructed from material has a relatively flat response function across a wide range of wavelengths, making them suitable for power measurements of broadband sources such as LEDs and SLDs. These sensors deliver a voltage proportional to the input optical power.
- Pyroelectric energy 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.
Click on the links in the table below to learn more about the features of our C-series sensors.
In addition to the power and energy sensors listed below, Thorlabs also offers all-in-one, wireless, handheld power meters that contain either a photodiode or a thermal sensor. More information can be found here.
|Detector Type||Sensor Family||Applications||Item #||Wavelength||Energy or Power Range||Detector Type||Aperture||Response Time|
|S120VC||200 - 1100 nm||50 nW - 50 mW||Si||Ø9.5 mm||<1 µsa|
|S120C||400 - 1100 nm||50 nW - 50 mW||Ø9.5 mm|
|S121C||400 - 1100 nm||500 nW - 500 mW||Ø9.5 mm|
|S122C||700 - 1800 nm||50 nW - 40 mW||Ge||Ø9.5 mm|
|Power Measurements in|
|S130VC||200 - 1100 nm||Dual Range:|
5 nW - 5 mW or
50 nW - 50 mW
|S130C||400 - 1100 nm||Dual Range:|
500 pW - 5 mW or
100 µW - 500 mW
|S132C||700 - 1800 nm||Dual Range:|
5 nW - 5 mW or
100 µW - 500 mW
|Gi Slim||Ø9.5 mm|
|Measure Power at the|
Sample Plane of a Microscope
|S170C||350 - 1100 nm||10 nW - 150 mW||Si|
|18 mm x |
Integrating Sphere Sensors
|Power Measurements for|
High Powers and Divergent Beams
|S140C||350 - 1100 nm||1 µW - 500 mW||Si|
|S142C||350 - 1100 nm||5 µW - 5 W||Ø12 mm|
|S144C||800 - 1700 nm||100 nW - 500 mW||InGaAs|
|S145C||800 - 1700 nm||1 µW - 3 W||Ø12 mm|
|S146C||900 - 1650 nm||10 µW - 20 W||Ø12 mm|
|Fiber Power Measurements and|
|S150C||350 - 1100 nm||100 pW - 5 mW||Si|
|S151C||400 - 1100 nm||1 nW - 20 mW||Ø5 mm|
|S154C||800 - 1700 nm||100 pW - 3 mW||InGaAs|
|S155C||800 - 1700 nm||1 nW - 20 mW||Ø5 mm|
Optical Power Measurements
|S302C||190 nm - 25.0 µm||100 µW - 2 W||Stabilized Thermal|
|Ø12 mm||3 sb|
|S310C||190 nm - 25.0 µm||10 mW - 10 W||Thermal Surface|
|Ø20 mm||<1 sb|
|S314C||190 nm - 11.0 µm||10 mW - 40 W||Ø25 mm|
|S322C||250 nm - 11.0 µm||100 mW - 200 W||Ø25 mm||1 sb|
|Power Measurements in|
|S305C||190 nm - 25.0 µm||10 mW - 5 W||Ø10 mm||<1 sb|
|Broadband Optical Power|
Measurements Down to 10 µW
|S401C||190 nm - 20.6 µm||10 µW - 1 W (3W)c||Stabilized Thermal|
YAG and Excimer Sensors
High Peak Powers or
YAG or Excimer Lasers
|S350C||190 nm - 1.1 µm|
and 10.6 µm
|10 mW - 40 W||Thermal Surface|
|Ø40 mm||1 sb|
|S370C||400 nm - 5200 nm||10 mW - 10 W||Thermal Volume Absorber||Ø25 mm||3 sb|
|S470C||250 nm - 10.6 µm||100 µW - 5 W||Ø15 mm||<2 sb|
Standard Energy Sensors
|ES111C||185 nm - 25.0 µm||10 µJ - 150 mJ||Pyroelectric||Ø11 mm||N/Ad|
|ES120C||185 nm - 25.0 µm||100 µJ - 500 mJ||Ø20 mm|
|ES145C||185 nm - 25.0 µm||500 µJ - 2 J||Ø45 mm|
High Energy Sensors
|High Energy Measurements|
for High Peak Energy Lasers:
|ES220C||185 nm - 25.0 µm||500 µJ - 3 J||Pyroelectric|
|ES245C||185 nm - 25.0 µm||1 mJ - 15 J||Ø45 mm|
Standard Photodiode Sensor Mounting Options
Thorlabs Standard Photosdiode Sensors compact design allows easy integration into existing setups. Typical mounting configurations including post, cage, and lens tube options are available. Shown on this page are several different choices for mounting these sensors.
The Standard Photodiode Sensors are compatible with all S120-xx Series fiber adapters. FC/PC and SMA adapters are shown on the right. Adapters for SC, LC, and ST connections are also available.
Flip up mounts are convenient for quick power measurments from a static location. The sensor can be placed in the path of the laser beam for the power measurment and flipped down during normal operation of the system.
FM90 Right Angle Flip-Mounts are shown to the right. Thorlabs also offers the TRB1 Articulating Post Mount. The lockable articulating mount offers almost unlimited positioning of the sensor head. The articulating mount is shown on an S13xC Slim Photodiode Sensor below.
The Standard Photodiode Sensors also feature SM1 threaded connections on the front face. The SM1 theading provides easy mounting to 1" lens tube systems and quick release mounts.
Shown to the right are the KB1P Quick-Release Post Mount and QRC1A Quick-Release 30 mm Cage Mount. Both mounts feature SM1 threaded connections to the sensor heads.
Note: Due to the thickness of the S12xC sensor, the QRC1A and CP90F (shown below) quick release mounts can only be fully removed from the cage system by backing them off an open end. The two mounts are easily removed from the cage system if only three cage mounts are used. See the picture on the right.
Thorlabs also offers the CP90F 30 mm Cage Plates with Quick-Release Mounts. These mounts feature magnetically coupled mounting for easy and repeatable mounting.
Note: Like the QRC1A, the CP90F can not be removed from a closed cage system.
Slim Photodiode Sensor Mounting Options
Thorlabs' Slim Photodiode Sensors are designed to fit into tight optic arrangements such as cages, lens tubs, and optic dense free space arrangements.
Shown to the right is a S130C Sensor inserted into a 30 mm cage system. The application shown highlights the ease for which the sensor can be inserted into the cage, and the minimal space needed to take a power measurment.
The Slim Photodiode Sensors may also be mounted on a TRB1 Articulating Mount. This mount allows repeatable insertion of the sensor into tight optic arrangements. After the measurement is made, the sensor may be rotated out of the beam path for normal operation.
Integrating Sphere Photodiode Sensor Mounting Options
Thorlabs' Integrating Sphere Photodiode Sensor provides a low loss cavity for diverging, non-uniform, or off-axis beam measurements. These integrating spheres are ideal for all fiber based applications due to the beam divergence at the end of the fiber.
Shown to the right is an S140C Integrating Sphere with S120-FC Fiber Adapter. Also shown is an S140C with a S140-BFA Bare Fiber Adapter. The Bare Fiber adapter features a mounting clamp and light shield to decrease interference from ambient light.
Compact Fiber Photodiode Sensor Mounting Options
Thorlabs' Compact Fiber Photodiodes are the ideal choice for a portable, fiber coupled power meter. The S15xC sensors are compatible with a wide variety of fiber connections. PM20-xx adapters are available to couple FC, PC, SC, LC, SMA, and ST connectors with the sensors. Shown to the right is a S150C Sensor with FC and SMA connector adapters.
Shown to the far right is a PM100D console with S150C sensor connected to a FC connectorized optical fiber. This setup is ideal for portable in the lab and in the field use.
Pyroelectric Energy Sensor Mounting Options
Thorlabs' Pyroelectric Energy Sensors are ideal for measuring pulsed sources. These pyroelectric sensors provide direct energy readings for those sources. The sensors are designed to handle medium to high energy pulses from Excimer, YAG, and other high power lasers.
Mounting options include post (with insulating adapter) and cage configurations, shown to the right.
Software for the PM100x Series
All PM100x Series Consoles are shipped with the latest software versions preloaded onto the console or on the USB memory stick. The latest software, firmware, drivers, and utilities for the PM100x Series Power and Energy Meters are also available here.
Firmware updates are available for the PM100A, PM100D, and PM100USB Consoles. Each of these consoles can be controlled remotely by a PC utilizing the remote control application software. VXIpnp/VISA instrument driver are available for the Thorlabs PM100x Series Power Meter Consoles as well.
Software Version 4.91; Firmware Version 1.1.2
GUI, Drivers, and Utilities for the PM100USB Power Meter
Multi Console Option
Up to six PM100x Series Power Meters can also be operated remotely using the PM100x Multi Console Utility. The integration of up to six consoles greatly reduces clutter and allows easier monitoring of multiple light sources.
The free software tool allows the real time monitoring of up to six PM100x Power Meters to be shown in a single plot. Simply connect your PM100A, PM100D, or PM100USB meters to a USB hub and download the software here. Each meter's wavelength correction is set individually to allow for monitoring systems with multiple wavelengths.