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Proceedings Paper

Type-II InAs/GaSb superlattices for dual color infrared detection
Author(s): Linda Höglund; Rickard Marcks von Würtemberg; Hithesh Gatty; Anders Gamfeldt; Carl Asplund; Eric Costard
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Paper Abstract

Midwave-midwave dual color detection has been successfully demonstrated by using pixel filters fabricated on top of InAs/GaSb focal plane arrays (FPAs). The pixel filters used in these FPAs were designed to transmit infrared radiation in the 3.5 - 4.1 μm wavelength region and to completely block light shorter than 3.5 μm. By comparing the signals of filtered and unfiltered pixels, excellent contrast between the two bands were obtained. This design concept offers a great flexibility to tailor the transmission window to any wavelength range within the 3-5 μm wavelength region. In particular, this dual color detector concept has been used for gas detection of volatile organic compounds which have main absorption peaks at 3.3 μm.

Paper Details

Date Published: 27 January 2017
PDF: 6 pages
Proc. SPIE 10111, Quantum Sensing and Nano Electronics and Photonics XIV, 1011116 (27 January 2017); doi: 10.1117/12.2256514
Show Author Affiliations
Linda Höglund, IRnova AB (Sweden)
Rickard Marcks von Würtemberg, IRnova AB (Sweden)
Hithesh Gatty, IRnova AB (Sweden)
Anders Gamfeldt, IRnova AB (Sweden)
Carl Asplund, IRnova AB (Sweden)
Eric Costard, IRnova AB (Sweden)

Published in SPIE Proceedings Vol. 10111:
Quantum Sensing and Nano Electronics and Photonics XIV
Manijeh Razeghi, Editor(s)

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