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Proceedings Paper

Infrared detectors for 2- to 220-um astronomy
Author(s): James E. Huffman
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Paper Abstract

We present the performance characteristics of two examples from a special class of photon detector, based on the blocked impurity band (BIB) concept. Recent results are presented on Si:Sb BIB detectors covering the 2 to 50 micrometers wavelength range, and on Ge:Ga BIB detectors that are sensitive in the 50 to 220 micrometers range. The inherent properties of these BIB detectors make them a natural choice for infrared astronomy; minimal sensitivity to ionizing radiation, compatibility with large format (128 X 128) arrays, low dark currents and high detective quantum efficiencies, combined with a lack of anomalous behavior. The detector characteristics are discussed in terms of a standard BIB performance model. Both detector types appear to have unique potential for astronomy applications.

Paper Details

Date Published: 7 October 1994
PDF: 13 pages
Proc. SPIE 2274, Infrared Detectors: State of the Art II, (7 October 1994); doi: 10.1117/12.189241
Show Author Affiliations
James E. Huffman, Rockwell International Science Ctr. (United States)


Published in SPIE Proceedings Vol. 2274:
Infrared Detectors: State of the Art II
Randolph E. Longshore, Editor(s)

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