1÷1 1 jtm optical code sensor with Gray Code system based on miniaturized Photoconductive Mercury-Cadmium Telluride I Hg1CdTe (PC MCT) detector with three-stage thermoelectric cooler (TEC) has been developed and fabricated.Performance of PC MCT detector is presented evidencing good detectivity D* and responsivity Rv values in spectral range from 1,0 to 10,6 jim. Sensitive area structure allows producing of four digits Gray Code. Sensor can be used in electrooptical systems for spatial recognition ofpowerful sources ofcoherent infrared radiation.
Low-frequency flicker-noise "1/f' spectra were examined on Photoconductive Mercury-Cadmium Telluride I Hg1CdTe (PC MCT) infrared radiation detectors. Noise measurements were perfonned on PC MCT detectors with responsivity peak wavelength 2 from 3,0 to 5,5 xm and from 10,5 to 12,0 m at operating temperature T 205 -210 K and 78 K respectively. Tested high quality PC MCT infrared radiation detectors show extremely low spectral density of excess "1/f' noise and low values of noise-knee frequency from 10 to 150 Hz and demonstrate high-level performance.
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