Wideband optical heterodyne performance of extrinsic photoconductive infrared radiation detectors

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...

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Bibliographic Details
Published in:Applied optics (2004) 1970-08, Vol.9 (8), p.1848-1853
Main Authors: Kurtin, S L, Picus, G S, Buczek, C J
Format: Article
Language:English
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Summary: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.
ISSN:1559-128X
DOI:10.1364/AO.9.001848