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Proceedings Paper

Development status of Type II superlattice infrared detector in JAXA
Author(s): Haruyoshi Katayama; Junpei Murooka; Masataka Naitoh; Ryota Sato; Satoshi Kawasaki; Yudai Itoh; Syota Sugano; Tomoko Takekawa; Masafumi Kimata; Mikhail Patrashin; Iwao Hosako; Yasuhiro Iguchi
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Paper Abstract

We present the development status of Type II superlattice (T2SL) infrared detector in JAXA. Since 2009, we have started a basic research on InAs/GaSb T2SL infrared detectors. Our final goal is to realize the T2SL array detector having a cutoff wave length of λc=15 μm. In order to confirm a technical feasibility of 15 μm cutoff T2SL detector, we fabricated T2SL samples having a different thickness of InAs/ 7 monolayers (ML) GaSb. These crystals are designed for the cutoff wavelength from 6 μm to 15 μm. The X-ray Diffraction measurement shows a mismatch between the substrate and superlattice layers is below 0.006%. The surface morphology of the samples with an atomic force microscope is 1.5-3.3 Å RMS for 5×5 μm square regions. We also fabricated single pixel detectors with these crystals. We show the results of the spectral response measurement using a FTIR system. We also show the development status of an array detector. The array detector having the cutoff wavelength of 6 μm is successfully demonstrated. However, further improvements are required for a future 15 μm cutoff array detector.

Paper Details

Date Published: 11 June 2013
PDF: 7 pages
Proc. SPIE 8704, Infrared Technology and Applications XXXIX, 870416 (11 June 2013); doi: 10.1117/12.2015704
Show Author Affiliations
Haruyoshi Katayama, Japan Aerospace Exploration Agency (Japan)
Junpei Murooka, Japan Aerospace Exploration Agency (Japan)
Masataka Naitoh, Japan Aerospace Exploration Agency (Japan)
Ryota Sato, Japan Aerospace Exploration Agency (Japan)
Satoshi Kawasaki, Ritsumeikan Univ. (Japan)
Yudai Itoh, Ritsumeikan Univ. (Japan)
Syota Sugano, Ritsumeikan Univ. (Japan)
Tomoko Takekawa, Ritsumeikan Univ. (Japan)
Masafumi Kimata, Ritsumeikan Univ. (Japan)
Mikhail Patrashin, National Institute of Information and Communications Technology (Japan)
Iwao Hosako, National Institute of Information and Communications Technology (Japan)
Yasuhiro Iguchi, Sumitomo Electric Industries, Ltd. (Japan)


Published in SPIE Proceedings Vol. 8704:
Infrared Technology and Applications XXXIX
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; Paul R. Norton; Patrick Robert, Editor(s)

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