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Proceedings Paper

InSb arrays for IRAC (infrared array camera) on SIRTF (Space Infrared Telescope Facility)
Author(s): Judith L. Pipher; William J. Forrest; William J. Glaccum; Robert G. Benson; Danny J. Krebs; Murzy D. Jhabvala; Joseph P. Rosbeck; Nancy A. Lum; W. Y. Lum; James D. Garnett; Alan W. Hoffman; George Domingo; G. Mark Cushman; David A. Rapchun
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Paper Abstract

SIRTF requires detector arrays with extremely high sensitivity, limited only by the background irradiance. Especially critical is the near infrared spectral region around 3 micrometers , where the detector current due to the zodiacal background is a minimum. IRAC has two near infrared detector channels centered at 3.6 and 4.5 micrometers . We have developed InSb arrays for these channels that operate with dark currents of < 0.2 e/s and multiply-sampled noise of approximately 7 e at 200 s exposure. With these specifications the zodiacal background limited requirements has been easily met. In addition, the detector quantum efficiency of the InSb devices exceeds 90% over the IRAC wavelength range, they are radiation hard, and they exhibit excellent photometric accuracy and stability. Residual images have been minimized. The Raytheon 256 X 256 InSb arrays incorporate a specially developed (for SIRTF) multiplexer and high-grade InSb material.

Paper Details

Date Published: 16 November 2000
PDF: 6 pages
Proc. SPIE 4131, Infrared Spaceborne Remote Sensing VIII, (16 November 2000); doi: 10.1117/12.406544
Show Author Affiliations
Judith L. Pipher, Univ. of Rochester (United States)
William J. Forrest, Univ. of Rochester (United States)
William J. Glaccum, Univ. of Rochester (United States)
Robert G. Benson, Univ. of Rochester (United States)
Danny J. Krebs, NASA Goddard Space Flight Ctr. (United States)
Murzy D. Jhabvala, NASA Goddard Space Flight Ctr. (United States)
Joseph P. Rosbeck, Raytheon Co. (United States)
Nancy A. Lum, Raytheon Co. (United States)
W. Y. Lum, Raytheon Co. (United States)
James D. Garnett, Raytheon Co. and Rockwell Science Ctr. (United States)
Alan W. Hoffman, Raytheon Co. (United States)
George Domingo, Raytheon Co. and Jet Propulsion Lab. (United States)
G. Mark Cushman, Raytheon Co. (United States)
David A. Rapchun, Raytheon Co. (United States)


Published in SPIE Proceedings Vol. 4131:
Infrared Spaceborne Remote Sensing VIII
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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