Infrared detectors for 2- to 220-um astronomy

James E. Huffman

doi:10.1117/12.189241

7 October 1994 Infrared detectors for 2- to 220-μm astronomy

James E. Huffman

Proceedings Volume 2274, Infrared Detectors: State of the Art II; (1994) https://doi.org/10.1117/12.189241
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

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.

Citation Download Citation

James E. Huffman "Infrared detectors for 2- to 220-μm astronomy", Proc. SPIE 2274, Infrared Detectors: State of the Art II, (7 October 1994); https://doi.org/10.1117/12.189241

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