Laser Power & Energy Meters
Getting the right reading from your laser is a passion for us here at Pro-Lite. Which is why we teamed up with Coherent - the company which sets the standards in laser test and measurement. Coherent's range of laser meters encompasses thermal, photodiode and pyroelectric sensors for measuring the power and energy from almost any laser, from nW to kW, from nJ to Joules, from femtosecond to continuous wave and from 190nm to 12µm.
Selecting Your Meter
The Coherent range of laser power and energy meters ranges from the highly affordable to the highly capable.
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Measures |
Sensor Compatibility |
Computer |
Description |
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Power |
Energy |
Thermal |
Optical |
Pyroelectric |
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High performance laser |
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High performance laser |
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Flexible laser power |
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Flexible laser energy |
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Flexible laser power |
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Value laser power |
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N/A - Integrated Optical Sensor |
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Pocket-sized power |
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LabMax is Coherent’s performance laser power and energy meter. LabMax is compatible with all of Coherent’s optical, thermal and pyroelectric sensor heads. What sets LabMax apart is its ability to capture and report every pulse at kHz rep rates, multiple interface options and compatibility with LM-series quadrant thermopiles for beam power and position analysis.
FieldMax II is Coherent’s all-round performance star. Small enough for field service, but smart and versatile enough for use in the lab, FieldMax is available in three models compatible with thermal and photodiode heads (FieldMax TO), pyroelectric sensors (FieldMax P) or all three (FieldMax TOP). A USB interface, LabView® library and ability to measure every pulse at up to 300Hz complete the picture.
FieldMate is Coherent’s value champion. Small in price but big on performance, FieldMate is compatible with all Coherent’s optical and thermal heads. Measure the power from pulsed and CW lasers from the UV to far infrared, from nW to 10kW. The easy-to-use analogue needle display responds faster and with less overshoot than most digital meters, enabling rapid, precise laser adjustment.
LaserCheck is a highly affordable, pocket-sized meter for low power CW lasers.
Selecting the Right Sensor
All Coherent laser power and energy meters use interchangeable "smart" sensors which communicate their calibration settings to the meter. This allows you to add sensors as your needs change. Three generic types of sensors are offered - thermal, optical (photodiode) and pyroelectric. Use the table below to choose the correct type of sensor for the type of laser you are working with and for the type of measurements you wish to make.
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Laser Type |
Measurement Type |
Power Range |
Wavelength Range |
Sensor Type |
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CW |
Average Power |
1nW - 50mW |
250-1550nm |
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Pulsed |
Average Power |
100µW - 10kW |
0.19 - 12µm |
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Pulsed |
Energy per Pulse |
100nJ - 20J |
0.19 - 12µm |
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Long Pulsed |
Single Pulse Energy |
1J - 200J |
0.19 - 12µm |
Photodiode Sensors for CW Laser Power Measurements
Coherent’s LM-2 & OP-2 photodiode sensors are designed for low power measurements in the range from 1nW to 50mW (5W with optional attenuator) in the 250 – 1550nm band.
Thermal Sensors for CW & Pulsed Laser Power Measurements
Coherent’s PM (PowerMax) and LM-series thermal sensors are designed for power measurements with both pulsed and CW lasers from less than 0.1mW up to 10kW in the 190nm to 12µm band.
Pyroelectric Sensors for Pulsed Laser Energy Measurements
Coherent’s EnergyMax sensors provide measurements with all pulsed laser types, from nJ to Joules, from 190nm to 12µm, from femtosecond to 860µs pulse duration and from single shot up to 10kHz repetition rate.