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

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

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007spie.6690e...4s&link_type=abstract

Focal Plane Arrays for Space Telescopes III. Edited by Grycewicz, Thomas J.; Marshall, Cheryl J.; Warren, Penny G.. Proceeding

Computer Science

Performance

Scientific paper

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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