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Laser Power and Energy Meter, USB Only Interface
Compatible to All C-Type
Sensors Not Included
Data Transfer via
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
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
Sensor Compatibility Specs
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
USB Type Mini-B
USB Type Mini-B to Type A Cable Included
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.
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S150C Sensor with FC and SMA Connectors
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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.
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.
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.
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.
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.
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.
Please note that sensors are not included with the PM100USB console. For information about our compatible sensors, please see the sensor descriptions below.
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S120C and CP90F Quick-Release Mount
The S12xC Standard Photodiode Power Sensors are ideal for metering low power coherent and incoherent sources from the UV to the NIR. The NIST-Traceable, calibrated sensors feature an integrated viewing target for easy alignment, enhanced shielding against electromagnetic interference, over temperature alert device, and 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.
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SM1A29: SM1 Thread Adapter
Mounted on a S130C Sensor
The S13xC 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 Slim Photodiode Sensors can fit between closely space 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.
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S142C and S140-BFA Bare Fiber Adapter
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S142C and S120-FC Fiber Adapter
The S14xC Integrating Sphere Photodiode Power Sensors are the choice for non-uniform, diverging, beam shape and entrance angle independent power measurements. Integrating spheres are ideal for power measurements from fiber sources, as well as off-axis free space sources. The integrating spheres feature large Ø5 mm or Ø12 mm apertures, SM1(1.035"-40") threaded front connections, enhanced shielding against electromagnetic interference, and an overtemp 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-connectorized fiber. NIST-traceable data is stored in the sensor connector.
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PM100D with S150C Sensor and FC Cable
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.
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The S302C and S310C sensors have the same absorption curve as the S305C thermal sensor (sold below).
Thorlabs' Standard Thermal Power Sensors are designed for broadband optical power measurements of low (100 µW) to high (200 W) power sources. Each thermal sensor's broadband coating has a flat spectral response over a wide wavelength range, as shown in the plot to the right.
NIST-traceable response curves are stored in the sensor connector. Aperture sizes from Ø9.3 mm to Ø25 mm allow easy alignment and measurement of large-spot-size laser sources. These sensors feature external SM1 (1.035"-40) threading on the front for easy integration into existing cage and lens tube systems in addition to fiber coupling applications.
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The S305C sensor has the same absorption curve as the S302C and S310C thermal sensors featured above.
The S305C Slim Thermal Power Sensor is designed for detecting broadband optical powers from 10 mW - 5 W sources. Its slim profile makes it particularly useful in tight spaces. The broadband coating used on this thermal sensor features a flat response over a wide range of wavelengths, as shown in the plot to the right.
NIST-traceable response curves are stored in the sensor connector. The aperture size of Ø10 mm allows easy alignment and measurement of laser sources with large spot sizes. The Slim Thermal Sensor features external SM1 (1.035"-40) threading on the front for integration into existing Ø1" lens tube systems in addition to fiber coupling applications, and it also offers 4-40 taps at three corners that are compatible with our 30 mm cage systems. The sensor housing has virtually the same dimensions as a 30 mm cage plate. For use in particularly tight spaces, the front adapter can be removed to reduce the thickness from 18 mm to 15 mm.
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S401C Thermal Sensor with Included Light Shield
The S401C High-Sensitivity Thermal Sensor is designed for detecting broadband optical powers from 10 µW to 1 W sources with a resolution of 1 µW. The broadband coating used on this thermal sensor offers high absorption at wavelengths between 0.19 and 10.6 µm (shown in the plot below and to the right), which makes the sensor ideal for use with aligning and measuring Mid-IR Quantum Cascade Lasers (QCLs).
This sensor uses a thermal volume absorber, as these typically have significantly higher responsivities than thermal surface absorbers for detecting very low power levels and short (ns) pulses. However, this improvement usually comes at the expense of response time. The S401C sensor provides the best of both worlds, as it offers a similar response time to our fastest surface absorber thermal sensors (<1 s) without sacrificing the sensitivity needed for low power measurements.
The sensor aperture size of Ø10 mm allows easy alignment and measurement of laser sources with large spot sizes. The sensor also includes a removable, externally SM1-threaded (1.035"-40) adapter, which is held to the front of the sensor by two Philips-head screws. This adapter allows the sensor to be used with our Ø1" lens tubes, our fiber adapters (sold below), and the included, internally SM05-threaded (0.535"-40) light shield, as shown in the photo above and to the right. For use in particularly tight spaces, the adapter can be removed to reduce the thickness from 18.5 mm to 15 mm. The connector stores NIST-traceable calibration curves for the sensor.
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These absorption curves are shown over a broader wavelength range than the sensors' operating ranges. See the table below for the operating wavelength range of each sensor.
The S350C, S370C, and S470C Thermal Sensors are designed for high-peak-power pulsed laser sources. All of these units are post-mountable for free-space applications and feature NIST-traceable data stored in the sensor connector.
S370C and S470C
In comparison, the S470C has a smaller aperture of Ø15 mm and a lower max average power of 5 W. However, the S470C's smaller absorber decreases the response time to <2 s, and it has a thermal detector that can measure average powers down to 100 µW. With a housing size of only 45 mm x 45 mm x 18 mm, this thermal sensor head is also the most compact of our specialized thermal sensor heads for use with high-power lasers.
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ES220C Sensor Mounted in a 30 mm Cage System
The ESxxxC Standard and 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 black broadband or ceramic coating is used for low or high power measurements, respectively. Large sensor areas from Ø11 mm - Ø45 mm allow easy alignment. The energy sensors features BNC connectors for use with an oscilloscope, as well as standard power meter connectors which contain NIST and PTB-traceable calibration data.