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Proceedings Paper

Development of Type-II superlattice VLWIR detectors in JAXA
Author(s): Michito Sakai; Jumpei Murooka; Ayaka Kumeta; Toshiyoshi Kimura; Hiroshi Inada; Yasuhiro Iguchi; Yuta Hiroe; Masafumi Kimata
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Paper Abstract

One of JAXA’s future missions, using an imaging Fourier Transform Spectrometer (FTS), requires the focal plane array (FPA) that has high sensitivity up to the very long-wavelength infrared (VLWIR) region. Since a Type-II superlattice (T2SL) is the only known infrared material to exhibit performance that is theoretically predicted to be higher than that of HgCdTe additionally the cutoff wavelength can be tailored in the wavelength region of 3-30 μm, we started the research and development of the T2SL detector in 2009. In order to confirm our final goal, which is to realize the FPA with a cutoff wavelength of 15 μm, we first fabricated the 320 × 256 (QVGA format) InAs/GaInSb T2SL FPA with a cutoff wavelength of 15 μm, and the large-format 640 × 512 (VGA format) T2SL FPA is followed because the other missions, using an infrared imager, require the large-format FPA. The noise-equivalent delta temperature measured with F1.4 optics was 0.15 K for QVGA format T2SL FPA at 77 K. It was 0.35 K for VGA format T2SL FPA at 77 K, but there is non-uniformity, and further improvements are necessary to achieve high performance FPAs.

Paper Details

Date Published: 16 May 2017
PDF: 7 pages
Proc. SPIE 10177, Infrared Technology and Applications XLIII, 1017714 (16 May 2017); doi: 10.1117/12.2262453
Show Author Affiliations
Michito Sakai, Japan Aerospace Exploration Agency (Japan)
Jumpei Murooka, Japan Aerospace Exploration Agency (Japan)
Ayaka Kumeta, Japan Aerospace Exploration Agency (Japan)
Toshiyoshi Kimura, Japan Aerospace Exploration Agency (Japan)
Hiroshi Inada, Sumitomo Electric Industries, Ltd. (Japan)
Yasuhiro Iguchi, Sumitomo Electric Industries, Ltd. (Japan)
Yuta Hiroe, Ritsumeikan Univ. (Japan)
Masafumi Kimata, Ritsumeikan Univ. (Japan)

Published in SPIE Proceedings Vol. 10177:
Infrared Technology and Applications XLIII
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; John Lester Miller; Paul R. Norton, Editor(s)

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