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Optical Engineering

Photoresponse of low-background extrinsic infrared detector arrays
Author(s): Boris I. Fouks; Vasily F. Kocherov; Igor I. Taubkin; Leonid A. Vinokurov; Nicolas B. Zaletaev
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Paper Abstract

The operation of low-background lR extrinsic photoconductor detectors and detector arrays is essentially dependent on the process of spreading time-dependent photocurrent, which is due to low non-steady-state screening of the electric charges in the detectors. The spreading leads to an increase in the photoresponse time, an essential difference between the non-steady-state photocurrents in the circuits of the source contacts injecting free-charge carriers into the detectors and those in the circuits of the contacts that serve as drains for the carriers, and a high non-steady-state cross talk in the detector arrays. The results of the experimental study of all these effects and some others in 36- and 48-element linear arrays (Si:Ga) as well as their theoretical description are presented. The theory developed is in satisfactory agreement with the experimental data. Some consequences of the results obtained, which are important in space-based astronomy applications of such detectors, are discussed.

Paper Details

Date Published: 1 May 1994
PDF: 7 pages
Opt. Eng. 33(5) doi: 10.1117/12.165801
Published in: Optical Engineering Volume 33, Issue 5
Show Author Affiliations
Boris I. Fouks, Institute of Radioengineering and Electronics (Russia)
Vasily F. Kocherov, Orion (Russia)
Igor I. Taubkin, Orion (Russia)
Leonid A. Vinokurov, Orion (Russia)
Nicolas B. Zaletaev, Orion (Russia)


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