(Hg,Zn)Te photon detectors of 10.6 micron laser radiation with optical resonance cavity

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Infrared Detectors, Infrared Lasers, Laser Cavities, Mercury Tellurides, Optical Resonance, Zinc Tellurides, Linear Polarization, Low Temperature Environments, Semiconductor Devices

Scientific paper

The electric-field distributions of the light wave, radiation intensity, external quantum yield, and carrier concentration are determined in a photosensitive element located in an optical resonance cavity. Based on the results obtained, the normalized detectivity of a (Hg,Zn)Te photon detector is evaluated. It is shown that the interference effects in a homogeneous with respect to the energy gap and doping photosensitive element can result in the improvement of the detection parameters. High normalized detectivity is observed through numerical calculations in cooled and uncooled photoresistors, photomagnetoelectric detectors, and Dember detectors.

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