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Proceedings Paper

Design requirements for high-sensitivity UV solar blind imaging detectors based on AlGaN/GaN photodetector arrays: a review
Author(s): Cole W. Litton; P. J. Schreiber; Gary A. Smith; Tuoc Dang; Hadis Morkoc
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Paper Abstract

At present, band pass filtered, very high-gain photomultiplier tube (PMT) imaging sensors are employed to detect and image hot, UV emitting objects within the solar blind UV spectral region for wavelengths < 289 nm, either within or through the earth's atmosphere. In this paper we will reviews and summarize the stringent requirements that must be met in order to design AlGaN/GaN solar blind UV photodetector arrays that will have responsivities, detectivities, gain, speeds, and low noise levels comparable to those of present-day, high-gain PMT imaging detectors. Photodiode detectors operating in both the photovoltaic and photoconductive modes will be considered together with signal-gain that may be achieved through hybrid avalanche photodiodes and photodiodes operating in the pulsed Geiger mode.

Paper Details

Date Published: 12 November 2001
PDF: 15 pages
Proc. SPIE 4454, Materials for Infrared Detectors, (12 November 2001); doi: 10.1117/12.448177
Show Author Affiliations
Cole W. Litton, Air Force Research Lab. (United States)
P. J. Schreiber, John Bryan Observatory (United States)
Gary A. Smith, Air Force Research Lab. (United States)
Tuoc Dang, Air Force Research Lab. (United States)
Hadis Morkoc, Virginia Commonwealth Univ. (United States)

Published in SPIE Proceedings Vol. 4454:
Materials for Infrared Detectors
Randolph E. Longshore, Editor(s)

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