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Digital Handheld Power & Energy Meter Console


Digital Handheld Laser Power and Energy Meter Console

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


  • Handheld Digital Power Meter Console
  • Designed for Coherent and Incoherent Light Source Measurements
  • Power and Energy Measurements for CW and Pulsed Source Detection
  • Advanced Measurement Capabilities
  • Large 4" LCD Display with Multiple Display Options
  • Compatibile with Over 25 Sensors (shown below)
  • External 2 GB SD Memory Card for Storing and Transferring Data
  • USB 2.0 Interface
  • Long-Life Internal Li-Polymer Battery

The PM100D is the cornerstone of Thorlabs' optical power and energy meter consoles and is the digital counterpart to the PM100A Analog Power Meter Console. The console (and sensor, sold separately) is ideal for use as a CW and pulsed laser power meter, incoherent optical source power meter, general light power meter, fiber power meter, and more.

The PM100D is compatible with more than 25 photodiode, slim photodiode, integrating sphere, fiber, thermal, and pyroelectric sensors designed for use from the UV to the Mid-IR. See the Sensor Compatibility tab for further information. Thorlabs offers a variety of Power Meter Kits which include some of our most popular sensors bundled with the power meter console.

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

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

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

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

A slot for an SD memory card (a 2 GB SD card is included) allows data recording even in stand-alone operation, giving the user large memory storage when recording data in the field or away from a computer in the lab. Data can also be recorded via the USB PC connection and the control software. The PM100D software is capable of handling up to six consoles simultaneously. PC control software and features are highlighted in the Software tab.

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


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


Digital Optical Power and Energy Meter

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


Standard Photodiode Power Sensors


  • For General Purpose Optical Power Measurements
  • Integrated Viewing Target for Easy Sensor Alignment
  • Ø9.5 mm Sensor Aperture
  • Compaptible Fiber Adapters: S120-xx Series
  • Compatible with the PM200, PM100D, PM100USB, PM100A, and PM320E Consoles
  • Sensor, Protective Cap, IR Target, and Thread Adapter Included
  • Click Here to View All of our Photodiode Power Sensors

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


Slim Photodiode Power Sensors - S13xC Series


  • 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 SM1-Threaded (1.035"-40) Fiber Adapter Sold Below
  • Compatible with the PM200, PM100D, PM100USB, PM100A, and PM320E Consoles


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.


Integrating Sphere Photodiode Power Sensors - S14xC Series


  • For Beam-Shape- and Entrance-Angle-Independent Power Measurements
  • Integrating Sphere Design Acts as a Diffuser with Minimal Power Loss
  • Ø5 mm or Ø12 mm Input Apertures
  • Removable S120-FC Fiber Adapters (FC/PC and FC/APC) Included
  • Compatible Fiber Adapters: S120-xx Series and S140-BFA Bare Fiber Adapter
  • Compatible with the PM200, PM100D, PM100USB, PM100A, and PM320E Consoles


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. NIST-traceable data is stored in the sensor connector.


Fiber Photodiode Power Sensors - S15xC Series


  • 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 SMA Adapter
  • Compatible with all PM20-xx Series Fiber Adapters
  • Compatible with the PM200, PM100D, PM100USB, PM100A, and PM320E Consoles


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. The connectors included with these sensors are easily interchanged with a variety of standard fiber connectors.


Thermal Sensors for General Applications - S3xxC Series


  • For General Broadband Optical Power Measurements
  • Ø12 mm - Ø25 mm Sensor Area
  • Fast Response Time
  • Broadband Coatings with Flat Response over a Large Wavelength Range
  • Compaptible Fiber Adapters: S120-xx Series
  • Compatible with the PM200, PM100D, PM100USB, PM100A, and PM320E Consoles


The S3xxC Thermal Power Sensors are designed for broadband optical power measurements of low (100 µW) to high (200 W) power sources. The broadband coatings used on these thermal sensors feature 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. Aperture sizes from Ø12 mm to Ø25 mm allow easy alignment and measurement of large-spot-size laser sources. These sensors feature SM1 (1.035"-40) threading on the front for easy integration into existing cage and lens tube systems in addition to fiber coupling applications.


Thermal Sensors for Excimer and YAG Lasers - S3xxC Series


  • For Optical Power Measurements of Excimer and YAG Lasers
  • Ideal for Applications with High Peak Powers (10 W and 40 W Versions Available)
  • Ø25 mm or Ø40 mm Sensor Area
  • Fast Response Time
  • Compatible with the PM200, PM100D, PM100USB, PM100A, and PM320E Consoles


The S350C and S370C Thermal Sensors are designed for Excimer and YAG pulsed laser sources, respectively. The S350C sensor features a Ø40 mm aperture, while the S370C has a Ø25 mm aperture designed for easy alignment of large spot size pulsed lasers. The units are post mountable for free space applications and feature NIST-traceable data stored in the sensor connector.


Pyroelectric Sensors - ESxxxC Series


  • For General Purpose and High Energy Optical Pulse Measurements
  • Black Broadband Coating with Flat Response Over a Wide Wavelength Range
  • Ceramic Coating with High Damage Thresholds for High-Energy-Density Lasers
  • Ø11 mm - Ø45 mm Sensor Area
  • Comes with BNC Connector for Oscilloscope Use and a Sensor Adapter for Use with the
    PM200, PM100D, PM100USB, and PM320E Consoles


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 oscilloscope use, as well as standard power meter connectors which contain NIST and PTB-traceable calibration data.



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