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Cooled infrared photodetector
№22 Department semiconductor infrared Photoelectronics
V.V. Tetorkіn, L.F. Linnyk
Destination
The photodetector can be used for registration of laser radiation in an infra-red range of a spectrum.
Principle of operation
Hg1-хCdхTe (x=0,19-0,23) photoresistor serves as a photosensitive detector, which operate at temperature of liquid nitrogen. The photodetector can be supplied by a broadband amplifier.
Areas of application:
The photodetector can be used in scientific investigations, medicine, thermal imaging technique. It is favorably differ from the pyroelectric analogue by wide dynamic range.
Technical parameters
Semiconductor Hg1-хCdхTe (x=0.19-0.23)
Wavelength range, μm 2-14
Detectivity, D*, cm Hz1/2W-1 2×1010
Time constant, μs 1
Supply voltage, V 9
Operating temperature, К 77
Dynamic range 60 dB
Area of sensitive element, mm 1х1