Comparing the low-temperature performance of megapixel NIR InGaAs and HgCdTe imager arrays

S. Seshadri; D. M. Cole; B. Hancock; P. Ringold; C. Peay; C. Wrigley; M. Bonati; M. G. Brown; M. Schubnell; G. Rahmer; D. Guzman; D. Figer; G. Tarle; R. M. Smith; C. Bebek

doi:10.1117/12.734739

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14 September 2007 Comparing the low-temperature performance of megapixel NIR InGaAs and HgCdTe imager arrays

S. Seshadri, D. M. Cole, B. Hancock, P. Ringold, C. Peay, C. Wrigley, M. Bonati, M. G. Brown, M. Schubnell, G. Rahmer, D. Guzman, D. Figer, G. Tarle, R. M. Smith, C. Bebek

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Proceedings Volume 6690, Focal Plane Arrays for Space Telescopes III; 669006 (2007) https://doi.org/10.1117/12.734739
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

We compare a more complete characterization of the low temperature performance of a nominal 1.7um cut-off wavelength 1kx1k InGaAs (lattice-matched to an InP substrate) photodiode array against similar, 2kx2k HgCdTe imagers to assess the suitability of InGaAs FPA technology for scientific imaging applications. The data we present indicate that the low temperature performance of existing InGaAs detector technology is well behaved and comparable to those obtained for state-of-the-art HgCdTe imagers for many space astronomical applications. We also discuss key differences observed between imagers in the two material systems.

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S. Seshadri, D. M. Cole, B. Hancock, P. Ringold, C. Peay, C. Wrigley, M. Bonati, M. G. Brown, M. Schubnell, G. Rahmer, D. Guzman, D. Figer, G. Tarle, R. M. Smith, and C. Bebek "Comparing the low-temperature performance of megapixel NIR InGaAs and HgCdTe imager arrays", Proc. SPIE 6690, Focal Plane Arrays for Space Telescopes III, 669006 (14 September 2007); https://doi.org/10.1117/12.734739

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