InSb arrays for IRAC (infrared array camera) on SIRTF (Space Infrared Telescope Facility)

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

doi:10.1117/12.406544

16 November 2000 InSb arrays for IRAC (infrared array camera) on SIRTF (Space Infrared Telescope Facility)

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

Author Affiliations +

Proceedings Volume 4131, Infrared Spaceborne Remote Sensing VIII; (2000) https://doi.org/10.1117/12.406544
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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.

Citation Download Citation

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, and David A. Rapchun "InSb arrays for IRAC (infrared array camera) on SIRTF (Space Infrared Telescope Facility)", Proc. SPIE 4131, Infrared Spaceborne Remote Sensing VIII, (16 November 2000); https://doi.org/10.1117/12.406544

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