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Proceedings Paper

Mid- and far-infrared hybrid focal plane arrays for astronomy
Author(s): Terry L. Herter; Thomas L. Hayward; James R. Houck; David H. Seib; Wen N. Lin
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Paper Abstract

High performance 128 X 128 Si:As and Si:Sb blocked- impurity-band hybrid arrays have been developed for ground- based and airborne astronomy. These devices cover the 5-25 (Si:As) and 15-40 micrometers (Si:Sb) portions of the spectrum. The peak detective quantum efficiencies quantum efficiencies exceed 50 percent for Si:As and 30 percent for Si:Sb. An anti-reflection coat is used to increase responsivity and to reduce internal reflections for the Si:As detectors. The multiplexer yields a linear output response vs. integrated charge. A special design feature of the multiplexer is a changeable nodal capacitance that allows dynamic switching of the well depth between 1.8 X 106 and 1.8 X 107 electrons. The single-sample read noises for the two states are approximately 75 and approximately 760 electrons respectively. These devices have been used successfully to perform astronomical observations in a number of instruments.

Paper Details

Date Published: 21 August 1998
PDF: 7 pages
Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); doi: 10.1117/12.317231
Show Author Affiliations
Terry L. Herter, Cornell Univ. (United States)
Thomas L. Hayward, Cornell Univ. (United States)
James R. Houck, Cornell Univ. (United States)
David H. Seib, Boeing Defense and Space Group (United States)
Wen N. Lin, Boeing Defense and Space Group (United States)

Published in SPIE Proceedings Vol. 3354:
Infrared Astronomical Instrumentation
Albert M. Fowler, Editor(s)

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