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21 August 1998 Si:As IBC IR focal plane arrays for ground-based and space-based astronomy
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Abstract
Raytheon/SBRC has demonstrated high quality Si:As IBC IR FPAs for both ground-based and space-based Mid-IR astronomy applications. These arrays offer in-band quantum efficiencies of approximately 50 percent over a wavelength range from 6 micrometers to 26 micrometers and usable responses from 2 micrometers to 28 micrometers . For high background, ground-based applications the readout input circuit is a direct injection (DI) FET, while for low background, space-based applications a source follower per detector (SFD) is used. The SFD offers extremely low noise and power dissipation, and is implemented in a very small unit cell. The DI input circuit offers much larger bucket capacity and better linearity compared with the SFD, and is implemented in a 50 micrometers unit cell. SBRC's Si:As IBC detector process results in very low dark current sand our Raytheon/MED readout process is optimized for very low redout noise at low temperature operation. SBRC is committed to achieving still better performance to serve the future needs of the IR astronomy community.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Arnold D. Estrada, George Domingo, James D. Garnett, Alan W. Hoffman, Nancy A. Lum, Peter J. Love, Steven Lawrence Solomon, John E. Venzon, G. R. Chapman, K. P. Sparkman, Craig R. McCreight, Mark E. McKelvey, Robert E. McMurray Jr., John A. Estrada, S. Zins, R. McHugh, and R. R. Johnson "Si:As IBC IR focal plane arrays for ground-based and space-based astronomy", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317220
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