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Coherent® Thermopile Power Sensor 1097901 | 10mW - 10W, DB25

Stock #59-981
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Power Range:
10mW - 10W
Active Area Diameter (mm):
Model Number:
Coherent Part Number: 1097901
Computer Interface:
Calibration Uncertainty (%):
Calibration Wavelength (nm):
Cooling Method:
Maximum Incident Power Density (kW/cm2):
Maximum Intermittent Power, <5min (W):
30 (air-cooled)
Wavelength Range (nm):
190 - 11000
Wavelength Range (μm):
0.19 - 11
Long Pulse Joule Mode Range (J):
0.5 - 10
Length of Cable (m):
Type of Sensor:
Maximum Incident Energy Density (J/cm2):
0.6 @ 1064nm, 10ns
Compatible Meters:

Regulatory Compliance

RoHS 2015:

Product Family Description

  • Superior Damage Resistance
  • Wide Dynamic Range
  • ISO 17025 Certified

Coherent® Thermopile Power Sensors are ideal solutions for measuring the average power of continuous wave lasers or pulsed laser energy. Thermopile sensors operate by absorbing and converting incident laser radiation into heat, which then flows to a heat sink. The temperature difference between the absorber and heat sink is converted into an electrical signal by a thermocouple junction. Unlike semiconductor sensors, thermopile sensors do not saturate. Unlike semiconductor sensors, thermopile sensors feature high power capability and flat spectral response.