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Wideband Optical Heterodyne Performance of Extrinsic Photoconductive Infrared Radiation Detectors

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Abstract

Heterodyne detection of infrared radiation by cryogenically cooled extrinsic photoconductors is reviewed. Operational characteristics of a highly compensated Ge:Hg detector are calculated from experimentally determined material parameters. In many cases wideband, quantum noise limited performance can be obtained only if substantial refrigeration capacity is available at detector operating temperature.

© 1970 Optical Society of America

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