Abstract

Infrared detectors prepared from the alloy semiconductor Hg_1−xCd_xTe exhibit a family of relative response characteristics throughout the 1-μ to 14-μ spectral interval. Both photoconductive and photovoltaic effects are observed. The relative spectral responses shift to longer wavelengths with decreasing temperature. Photoconductive response time measurements at 77°K reveal values no greater than 10⁻⁷ sec. Detectors are limited by either thermal noise or current (1/f) noise, depending upon measurement frequency and magnitude of bias current.

© 1965 Optical Society of America

(Hg,Cd)Te Photodiode Laser Receivers for the 1–3-μ Spectral Region

D. A. Soderman and W. H. Pinkston
Appl. Opt. 11(10) 2162-2168 (1972)

Extrinsic Detectors

Henry Levinstein
Appl. Opt. 4(6) 639-647 (1965)

Performance of S-192 (Hg,Cd)Te Arrays

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N-Color (Hg,Cd)Te Photodetectors

H. Halpert and B. L. Musicant
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F. D. Morten and R. E. J. King
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