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Title: Attainment of high sensitivity at elevated operating temperatures with staring hybrid HgCdTe-on-sapphire focal plane arrays

Abstract

Cost-effective high-performance IR imaging cameras need affordable staring focal plane arrays (FPAs) that can operate effectively at temperatures compatible with inexpensive long-life coolers. The authors report on staring hybrid 128 [times] 128 and 256 [times] 256 Hg[sub 1[minus]x]Cd[sub x]Te FPAs that have requisite yield, sensitivity, operability, and reliability at a medium-wavelength IR (MWIR) cutoff wavelength and elevated operating temperatures. Mean 256 [times] 256 FPA noise-equivalent temperature differences (NE[Delta]T) using broadband f/1.7 optics were 4.3, 7.7, and 55 mK at 120, 140, and 180 K, respectively. They extrapolate that camera NE[Delta]T [<=] 0.02 K can be achieved at 190 K using optimized [lambda][sub c] of [approximately]4.4 [mu]m (180 K), a 3.4- to 4.2-[mu]m bandpass filter, and f/1 optics. Because the CMOS multiplexers have a low-power dissipation and need little ancillary circuitry in the dewar, a viable thermoelectrically-cooled FPA technology is thus implied once the [lambda][sub c] is optimized for MWIR imaging.

Authors:
; ; ; ; ; ; ;  [1]
  1. (Rockwell International Science Center, Thousand Oaks, CA (United States))
Publication Date:
OSTI Identifier:
7043685
Resource Type:
Journal Article
Journal Name:
Optical Engineering; (United States)
Additional Journal Information:
Journal Volume: 33:3; Journal ID: ISSN 0091-3286
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; INFRARED RADIATION; RADIATION DETECTION; SEMICONDUCTOR DETECTORS; SENSITIVITY; CADMIUM TELLURIDES; CAMERAS; COOLING; FABRICATION; IMAGES; MERCURY TELLURIDES; CADMIUM COMPOUNDS; CHALCOGENIDES; DETECTION; ELECTROMAGNETIC RADIATION; MEASURING INSTRUMENTS; MERCURY COMPOUNDS; RADIATION DETECTORS; RADIATIONS; TELLURIDES; TELLURIUM COMPOUNDS; 440500* - Thermal Instrumentation- (1990-)

Citation Formats

Kozlowski, L.J., McLevige, W.V., Cabelli, S.A., Vanderwyck, A.H., Cooper, D.E., Blazejewski, E.R., Vural, K., and Tennant, W.E.. Attainment of high sensitivity at elevated operating temperatures with staring hybrid HgCdTe-on-sapphire focal plane arrays. United States: N. p., 1994. Web. doi:10.1117/12.163405.
Kozlowski, L.J., McLevige, W.V., Cabelli, S.A., Vanderwyck, A.H., Cooper, D.E., Blazejewski, E.R., Vural, K., & Tennant, W.E.. Attainment of high sensitivity at elevated operating temperatures with staring hybrid HgCdTe-on-sapphire focal plane arrays. United States. doi:10.1117/12.163405.
Kozlowski, L.J., McLevige, W.V., Cabelli, S.A., Vanderwyck, A.H., Cooper, D.E., Blazejewski, E.R., Vural, K., and Tennant, W.E.. Tue . "Attainment of high sensitivity at elevated operating temperatures with staring hybrid HgCdTe-on-sapphire focal plane arrays". United States. doi:10.1117/12.163405.
@article{osti_7043685,
title = {Attainment of high sensitivity at elevated operating temperatures with staring hybrid HgCdTe-on-sapphire focal plane arrays},
author = {Kozlowski, L.J. and McLevige, W.V. and Cabelli, S.A. and Vanderwyck, A.H. and Cooper, D.E. and Blazejewski, E.R. and Vural, K. and Tennant, W.E.},
abstractNote = {Cost-effective high-performance IR imaging cameras need affordable staring focal plane arrays (FPAs) that can operate effectively at temperatures compatible with inexpensive long-life coolers. The authors report on staring hybrid 128 [times] 128 and 256 [times] 256 Hg[sub 1[minus]x]Cd[sub x]Te FPAs that have requisite yield, sensitivity, operability, and reliability at a medium-wavelength IR (MWIR) cutoff wavelength and elevated operating temperatures. Mean 256 [times] 256 FPA noise-equivalent temperature differences (NE[Delta]T) using broadband f/1.7 optics were 4.3, 7.7, and 55 mK at 120, 140, and 180 K, respectively. They extrapolate that camera NE[Delta]T [<=] 0.02 K can be achieved at 190 K using optimized [lambda][sub c] of [approximately]4.4 [mu]m (180 K), a 3.4- to 4.2-[mu]m bandpass filter, and f/1 optics. Because the CMOS multiplexers have a low-power dissipation and need little ancillary circuitry in the dewar, a viable thermoelectrically-cooled FPA technology is thus implied once the [lambda][sub c] is optimized for MWIR imaging.},
doi = {10.1117/12.163405},
journal = {Optical Engineering; (United States)},
issn = {0091-3286},
number = ,
volume = 33:3,
place = {United States},
year = {1994},
month = {3}
}