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Proceedings Paper

Comparing the low-temperature performance of megapixel NIR InGaAs and HgCdTe imager arrays
Author(s): 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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Paper 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.

Paper Details

Date Published: 14 September 2007
PDF: 7 pages
Proc. SPIE 6690, Focal Plane Arrays for Space Telescopes III, 669006 (14 September 2007); doi: 10.1117/12.734739
Show Author Affiliations
S. Seshadri, Jet Propulsion Lab. (United States)
D. M. Cole, Jet Propulsion Lab. (United States)
B. Hancock, Jet Propulsion Lab. (United States)
P. Ringold, Jet Propulsion Lab. (United States)
C. Peay, Jet Propulsion Lab. (United States)
C. Wrigley, Jet Propulsion Lab. (United States)
M. Bonati, California Institute of Technology (United States)
M. G. Brown, Univ. of Michigan (United States)
M. Schubnell, Univ. of Michigan (United States)
G. Rahmer, California Institute of Technology (United States)
D. Guzman, California Institute of Technology (United States)
D. Figer, Rochester Institute of Technology (United States)
G. Tarle, Univ. of Michigan (United States)
R. M. Smith, California Institute of Technology (United States)
C. Bebek, Lawrence Berkeley National Lab. (United States)


Published in SPIE Proceedings Vol. 6690:
Focal Plane Arrays for Space Telescopes III
Thomas J. Grycewicz; Cheryl J. Marshall; Penny G. Warren, Editor(s)

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