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Proceedings Paper

Nonlinear response of QWIP detectors: summary of data from four manufacturers
Author(s): Douglas C. Arrington; John Edward Hubbs; Mark E. Gramer; Gary A. Dole
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Paper Abstract

Quantum Well Infrared Photodetectors (QWIPs) have been proposed for use in space based remote sensing applications. These space systems place stringent performance requirements on infrared detectors due to the low irradiance environments and the associated requirement for low temperature operation. This study demonstrates that, under these space conditions, the responsivity of a QWIP detector depends on frequency and that the shape of the frequency response depends on the operational conditions. The non-flat frequency response is empirically similar to dielectric relaxation effects observed in bulk extrinsic silicon and germanium photoconductors under similar operational conditions. Data from four QWIP detectors, obtained from four independent sources, demonstrate how the frequency response of QWIP detectors vary with temperature, photon irradiance, and bias voltage, and how the shape of the frequency response depends on the dynamic resistance of the detector. This QWIP frequency response results in a detector signal that is nonlinear with irradiance for some combinations of detector bias, photon irradiance, and operating temperature.

Paper Details

Date Published: 17 July 2000
PDF: 12 pages
Proc. SPIE 4028, Infrared Detectors and Focal Plane Arrays VI, (17 July 2000); doi: 10.1117/12.391741
Show Author Affiliations
Douglas C. Arrington, Ball Aerospace and Technologies Corp. (United States)
John Edward Hubbs, Ball Aerospace and Technologies Corp. (United States)
Mark E. Gramer, Ball Aerospace and Technologies Corp. (United States)
Gary A. Dole, Ball Aerospace and Technologies Corp. (United States)


Published in SPIE Proceedings Vol. 4028:
Infrared Detectors and Focal Plane Arrays VI
Eustace L. Dereniak; Robert E. Sampson, Editor(s)

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