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Laser power impinges on the center of the thermopile sensor disc (on the reverse side of the thermopile), flows radially and is cooled on the periphery. The array of thermocouples measures the temperature gradient, which is proportional to the incident or absorbed power.
The Comet 1K portable power puck laser sensor has a 50 mm aperture. It can measure power from 20 to 1000 W by sampling a 10 s exposure of laser power. It has the spectrally flat broadband coating and covers the spectral range from 0.2 to 20 µm.
The high damage threshold Comet 10K-HD is a portable power puck laser sensor with a 55mm aperture. It can measure power from 200W to 10kW by sampling a 30s exposure of laser power. It has a deflecting cone and the spectrally flat broadband coating and covers the spectral range 0.98 – 1.07µm and 10.6µm
The Comet 1K is a portable power puck laser sensor with a 50mm aperture. It can measure power from 20W to 1000W by sampling a 10s exposure of laser power. It has the spectrally flat broadband coating and covers the spectral range from 0.2 to 20µm.
The Comet 10K is a portable power puck laser sensor with a 100mm aperture. It can measure power from 200W to 10kW by sampling a 20s exposure of laser power. It has a broadband coating and is calibrated for 0.98 – 1.07µm and 10.6µm.
The Comet 10K is a portable power puck laser sensor with a 100mm aperture. It can measure power from 200W to 10kW by sampling a 20s exposure of laser power. It has a broadband coating and is calibrated for 0.98 – 1.07µm and 10.6µm.
The power puck provides a single data point describing the intensity, and the laser mode plate provides an image of the cross-section distribution of the laser intensity, which is subject to human interpretation.
