10/6 Micrometer Detector Array
Quarterly rept. no. 1, 1 Apr-1 Jul 1972
EATON CORP DEER PARK NY AIL DIV
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An optical design approach is presented with supporting optical field patterns calculated on a digital computer for a 10 x 10 element array of PV- HgCdTe elements operating in the heterodyne mixing mode at 10.6 micrometers. Mixed field patterns across the surface of the detector were calculated along with the far field diffraction pattern of the array showing the signal crossover levels between adjacent elements of the array. Also discussed is an analysis of the power dissipation requirements of the photovoltaic mixers at 77 K. The local oscillator heating proved to be the highest with about 2 milliwatts dissipation required for near quantum noise limited operation at 1500 MHz. For a narrower bandwidth system of 150 MHz, the local power dissipation requirement may be reduced to several tenths of a milliwatt with the photodiode leakage current becoming the predominant power dissipating element.
- Infrared Detection and Detectors