Si:As IBC array performance for SIRTF/IRAC

Robert E. McMurray Jr.; R. R. Johnson; Craig R. McCreight; Mark E. McKelvey; James D. Garnett; Alan W. Hoffman; Nancy A. Lum; W. Y. Lum; Michael S. Smith; K. P. Sparkman; Andrew G. Toth; George Domingo; Danny J. Krebs; Murzy D. Jhabvala

doi:10.1117/12.406573

16 November 2000 Si:As IBC array performance for SIRTF/IRAC

Robert E. McMurray Jr., R. R. Johnson, Craig R. McCreight, Mark E. McKelvey, James D. Garnett, Alan W. Hoffman, Nancy A. Lum, W. Y. Lum, Michael S. Smith, K. P. Sparkman, Andrew G. Toth, George Domingo, Danny J. Krebs, Murzy D. Jhabvala

Author Affiliations +

Proceedings Volume 4131, Infrared Spaceborne Remote Sensing VIII; (2000) https://doi.org/10.1117/12.406573
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

The goal of achieving background-limited performance in SIRTF's cryogenic telescope environment places stringent demands on focal plane sensitivity. SIRTF's prime imaging instrument, the InfraRed Array Camera (IRAC), employs 256 X 256 Si:As Impurity-Band Conduction (IBC) arrays for its two longest wavelength channels at 5.8 micrometers and 8.0 micrometers . Background-limited performance is achieved at very low levels of zodiacal background radiation with cryo-optimized readout and detector technology from Raytheon. Presented here are performance measurements of IRAC flight candidate IBC arrays. Operating at a temperature of 6 K, these devices meet all IRAC sensitivity requirements, with dark currents well below the 10 e-/s specification, Fowler-sampled noise levels of 16 e-, and excellent photometric stability.

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Robert E. McMurray Jr., R. R. Johnson, Craig R. McCreight, Mark E. McKelvey, James D. Garnett, Alan W. Hoffman, Nancy A. Lum, W. Y. Lum, Michael S. Smith, K. P. Sparkman, Andrew G. Toth, George Domingo, Danny J. Krebs, and Murzy D. Jhabvala "Si:As IBC array performance for SIRTF/IRAC", Proc. SPIE 4131, Infrared Spaceborne Remote Sensing VIII, (16 November 2000); https://doi.org/10.1117/12.406573

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