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- W1978793009 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." @default.
- W1978793009 created "2016-06-24" @default.
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- W1978793009 date "2000-07-17" @default.
- W1978793009 modified "2023-10-16" @default.
- W1978793009 title "<title>Nonlinear response of QWIP detectors: summary of data from four manufacturers</title>" @default.
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- W1978793009 doi "https://doi.org/10.1117/12.391741" @default.
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