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15 June 2006 1024 x 1024 Si: as IBC detector arrays for MID-IR astronomy
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1K x 1K Si:As Impurity Band Conduction (IBC) arrays have been developed by Raytheon Vision Systems for the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI). These devices are also suitable for other low-background applications. The Si:As IBC detectors have a pixel dimension of 25 μm and respond to infrared radiation between 5 and 28 μm. Detector performance results are discussed, including response and dark current as a function of detector bias and relative spectral response. The features of the matching 1024 x 1024 Readout Integrated Circuit (ROIC) features are discussed. Noise data from the University of Rochester are shown with the ROIC operating at 7 K. Sensor Chip Assembly (SCA) data are presented showing noise, response uniformity, and dark current. Design details of a companion 1024 x 1024 array suitable for high-background, ground-based astronomy will also be revealed for the first time. This array will have a large well capacity and be capable of high frame rates.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peter J. Love, Eric J. Beuville, Elizabeth Corrales, John J. Drab, Alan W. Hoffman, Roger S. Holcombe, and Nancy A. Lum "1024 x 1024 Si: as IBC detector arrays for MID-IR astronomy", Proc. SPIE 6276, High Energy, Optical, and Infrared Detectors for Astronomy II, 62761Y (15 June 2006);


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