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Proceedings Paper

Large-format SWIR/MWIR HgCdTe infrared focal plane arrays for astronomy
Author(s): Kadri Vural; Lester J. Kozlowski; Craig A. Cabelli; Scott A. Cabelli; Annie Chi-yi Chen; Donald E. Cooper; Gary L. Bostrup; Robert B. Bailey; Dennis E. Edwall; Jose M. Arias; G. A. Stanley; G. G. Price; J. A. Pinter; William E. Kleinhans; Klaus-Werner Hodapp; Donald N. B. Hall
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Paper Abstract

We have developed 1024 X 1024 HAWAII (HgCdTe Arrays for Wide-field Astronomical Infrared Imaging) focal plane arrays (FPAs) for use in astronomical applications. These devices have been delivered to various astronomy organizations around the world and have resulted in increased sensitivities and decreased observation times for deep space imaging. The detector material is PACE-I for SWIR and Molecular Beam Epitaxy (MBE) HgCdTe on CdZnTe for MWIR. The 1024 X 1024 multiplexer has a 18.5 micrometer unit cell pitch, source follower per detector (SFD) input, and it was fabricated at or internal commercial CMOS process line with excellent yield. Mean dark currents as low as 0.02 e-/s have been measured at 77 K for 2.5 micrometer devices (1024 X 1024 format, 18.5 micrometer pitch) and 0.39 e-/s for 5.3 micrometer devices at 50 K (256 X 256 format, 40 micrometer pitch). Quantum efficiencies are greater than 50% for both SWIR and MWIR detectors; with AR coatings, these are expected to be above 75%. Noise levels of 3 e- have been measured by multiple sampling techniques for the SWIR and 75 e- for the MWIR. All of these devices are simple to operate and are readily available. We are presently developing 2048 X 2048 FPAs with 18 micrometer unit cell pitch for both SWIR and MWIR applications.

Paper Details

Date Published: 22 July 1998
PDF: 10 pages
Proc. SPIE 3379, Infrared Detectors and Focal Plane Arrays V, (22 July 1998); doi: 10.1117/12.317624
Show Author Affiliations
Kadri Vural, Rockwell Science Ctr. (United States)
Lester J. Kozlowski, Rockwell Science Ctr. (United States)
Craig A. Cabelli, Rockwell Science Ctr. (United States)
Scott A. Cabelli, Rockwell Science Ctr. (United States)
Annie Chi-yi Chen, Rockwell Science Ctr. (United States)
Donald E. Cooper, Rockwell Science Ctr. (United States)
Gary L. Bostrup, Rockwell Science Ctr. (United States)
Robert B. Bailey, Rockwell Science Ctr. (United States)
Dennis E. Edwall, Rockwell Science Ctr. (United States)
Jose M. Arias, Rockwell Science Ctr. (United States)
G. A. Stanley, Rockwell Semiconductor Systems (United States)
G. G. Price, Rockwell Semiconductor Systems (United States)
J. A. Pinter, Rockwell Semiconductor Systems (United States)
William E. Kleinhans, Valley Oak Semiconductor, Inc. (United States)
Klaus-Werner Hodapp, Univ. of Hawaii/Manoa (United States)
Donald N. B. Hall, Univ. of Hawaii/Manoa (United States)

Published in SPIE Proceedings Vol. 3379:
Infrared Detectors and Focal Plane Arrays V
Eustace L. Dereniak; Robert E. Sampson, Editor(s)

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