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Proceedings Paper

Infrared imaging using a 128x128-pixel array of GaAs/AlxGa1-xAs quantum-well infrared photodetectors
Author(s): Clyde G. Bethea; Barry F. Levine
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Paper Abstract

An AlxGa1-xAs/GaAs quantum well infrared photodetector (QWIP) 128 X 128 focal plane array, incorporating integral grating structures for efficient optical coupling have been hybridized to silicon CMOS multiplexes. The demonstrated high uniformity, excellent detectivity, and high yield of operating pixels (99% plus) has resulted in excellent imagery in the 8 - 12 micrometers range, with a low noise equivalent temperature difference (NE(Delta) T) of less than 10 mK, and high image contrast signal to noise ratios (CSNR). We will discuss the figures of merit that govern the image quality in our QWIP focal plane arrays, such as D*, uniformity, CSNR, maximum input charge to the CMOS multiplex, etc. Our latest results will also be reported.

Paper Details

Date Published: 10 December 1992
PDF: 6 pages
Proc. SPIE 1735, Infrared Detectors: State of the Art, (10 December 1992); doi: 10.1117/12.138623
Show Author Affiliations
Clyde G. Bethea, AT&T Bell Labs. (United States)
Barry F. Levine, AT&T Bell Labs. (United States)

Published in SPIE Proceedings Vol. 1735:
Infrared Detectors: State of the Art
Wagih H. Makky, Editor(s)

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