site site site my site my site my site
+61 8 8150 5200

Australia • New Zealand

Coherent PowerMax-Pro Sensors

Home Products Laser Accessories Power and Energy Meters Coherent PowerMax-Pro Sensors
Coherent PowerMax-Pro Sensors

Coherent PowerMax-Pro Sensors

The newest generation in sensor technology enhances productivity


PowerMax-Pro (Patent Pending) represents a dramatic technological advancement in laser power sensing that combines the broad wavelength sensitivity, dynamic range and laser damage resistance of a thermopile with the response speed of a semiconductor photodiode. This high-speed, thin film sensor technology for laser power measurement (50 mW to 15 kW) utilises a unique thermal flow design enabling fast, high power measurement, with high damage resistance. The sensor is so fast, less than ten microseconds in the case of the “HD” version, that users can trace the pulse shape of modulated lasers at pulse repetition frequencies up to 25 kHz.


  • Measures power in 10's of microseconds
  • High power up to 150W for HD models and 200W for BB models
  • Supports lasers from UV to Far-IR wavelengths
  • Capable of tracing the individual pulse shape of modulated and long pulse lasers
  • Large 30 x 30mm active area

In traditional thermopile detectors, heat is generated in the absorbing coating when it is struck by the laser. The heat must then move through the thick aluminum or copper substrate out to the edges, a distance of a centimeter or more, to where the thermocouple array is located. This heat flow takes time, which is why thermopiles take several seconds to steady out after the laser is turned on.


In these new PowerMax-Pro sensors, heat flows vertically through a film which is only microns thick. The result is a measurement response time below 10μs, as compared to over 1 second for traditional thermopiles. Plus, these detectors can operate over a spectral range as broad as 355nm to 11μm, and incorporate a large 30mm x 30mm active area.


Download the PowerMax-Pro datasheet or contact us for more information.


PowerMax-Pro datasheet                                   Read more on Coherent's website


2019 LMC Catalogue