Laser Power Sensors

Ophir provides two types of power sensors: Photodiode sensors and Thermal sensors. Photodiode sensors are used for low powers from picowatts up to hundreds of milliwatts and as high as 3W. Thermal sensors are for use from fractions of a milliwatt up to tens of thousands of watts.
Thermal sensors can also measure single shot energy at pulse rates not exceeding one pulse every ~5s.
Laser Power Sensors introduction»

Laser position sensor | Size measurement

BeamTrack series Thermal Sensors 100µW to 1000W
Thermal sensors that measure laser power and single shot energy like standard thermal sensors but in addition measure laser beam position and laser size. This position sensing detector measures laser beam position to 0.1mm accuracy and laser size measurement of a Gaussian beam to +/-5% accuracy. Measuring laser position is important for laser alignment where the laser position sensor can provide feedback to the laser position control.


Laser Photodiode Sensors | Laser measurement sensor

Standard Photodiode Sensors - 10pW to 3W
Ophir's Laser Measurement Photodiode PD-300 sensor series measures laser power with spectral coverage from 200nm – 1800nm, and automatic background subtraction so the laser measurement is not sensitive to room light. All models have wavelength calibration built into the system.

Round Photodiode Sensors – 20pW to 3W
Ophir's Round PD300R sensors are similar to the standard PD300 sensors but have cylindrical geometry where preferable. They have SM-1 mounting threads.

Special Photodiode Sensors
Integrating spheres for measuring laser power of divergent beams, flat response sensors for broadband sources, eye response detectors for Lux measurements, peak detector for measuring scanned or chopped laser beams. FPS-1 sensor for measuring temporal laser response into oscilloscope with 1ns response time.

Laser Thermal Low Power Sensor | Laser measurement sensor


High Sensitivity Thermal Laser Sensors – 300fm to 12W
Very low noise and drift thermal sensors accurately measure very low laser and LED powers over a wide range of wavelengths from UV to IR. These sensors also measure low single shot laser energies down to tens of µJ.

Low Power Thermal Sensors – 20mW to 50W
Ophir has the widest selection of laser and LED power measurement sensors for low average laser powers in the industry, pulsed or continuous laser sources and various beam sizes.

Low-medium power thermal sensors - 30mW-150W
Apertures from 17 to 35 mm. Sensors for measuring low powers continuously or higher powers intermittently. For pulsed or CW lasers or LEDs.

Medium Power Thermal Sensors – 100mW to 300W
Apertures from 50 to 65 mm. Sensors for larger beams and higher powers. Compact sensors for intermittent use.

Medium-High Power Fan Cooled Thermal Sensors - 50mW to 1100W
Compact fan cooled sensors for continuous use at higher laser powers.

High Power Water Cooled Thermal Sensors And Power Pucks – 1W to 120kW
These sensors for high power industrial lasers have the highest power measurement capability in the market – up to 120 kW. Ophir meters also have the highest damage thresholds available, up to 10 kW/cm² at full power.

High Power Laser Beam Dumps
Laser beam dumps for high power laser processing, laser measurement and other applications

Absorption and Damage Graphs | Laser measurement sensor

Spectral and Damage Threshold Graphs
Graphs of spectral absorption and damage threshold to help choose thermal laser power sensors. 

Absorption and Damage Graphs for Thermal Sensors