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Proceedings Paper

Detector and imager of IR radiation using IR quenching of visible radiation in crystals at room temperature
Author(s): Gennadii K. Vlasov; Grigorii M. Chernyavskiy; Nikolaii A. Dolgikh; Dmitrii N. Vylegzhanin
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Paper Abstract

In this paper there are investigated both theoretically and experimentally the possibility of high-sensitive detection and visualization of IR radiation in direct-gap semiconductor crystals due to IR quenching effect for probe visible radiation in the region of relative transparency of the crystal. This comparison allows us to conclude that the IR quenching effect observed by us in CdS crystal is probably the absorption of probe photon with energy deficit with respect to excitonic resonance, which is taken off due to exchange interaction of free exciton (Wannier-Mott type) in an intermediate state with spherical excitons that are localized at many electron impurity atoms.

Paper Details

Date Published: 15 July 1994
PDF: 8 pages
Proc. SPIE 2225, Infrared Detectors and Focal Plane Arrays III, (15 July 1994); doi: 10.1117/12.179689
Show Author Affiliations
Gennadii K. Vlasov, Ctr. for Program Studies (Russia)
Grigorii M. Chernyavskiy, Ctr. for Program Studies (Russia)
Nikolaii A. Dolgikh, Ctr. for Program Studies (Russia)
Dmitrii N. Vylegzhanin, Ctr. for Program Studies (Russia)


Published in SPIE Proceedings Vol. 2225:
Infrared Detectors and Focal Plane Arrays III
Eustace L. Dereniak; Robert E. Sampson, Editor(s)

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