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Progress in Design and Fabrication of Resonator Quantum Well Infrared Photodetectors (R-QWIP)

Authors:
Jason Sun
Kwong K Choi
Kimberley Olver
Richard Fu

Keywords: resonance; FPA; electromagnetic

Abstract:
Abstract—Resonator-Quantum Well Infrared Photo detectors (R-QWIPs) are the next generation of QWIP detectors that use resonances to increase the quantum efficiency (QE). Collaborating with L-3 Communications - Cincinnati Electronics, recently we explore R-QWIPs for long wavelength applications. By using our two optimized inductively coupled plasma (ICP) etching processes, two format (1Kx1K and 40x40) R-QWIP detectors were fabricated successfully. We achieved a quantum efficiency of 37% for 19 quantum wells and 35% for 8 quantum wells under a doping density of 0.5 × 1018 cm-3. The cutoff wavelength and bandwidth of both detectors are 10.5 μm and 2 μm respectively. The thermal sensitivity of the large format FPA is 27.2 mK at half well-fill (Nw/2) of 8.85 M electrons and intergration time of 4.46 ms under F/2.5 optics.

Pages: 72 to 76

Copyright: Copyright (c) The Government of USA, 2016. Used by permission to IARIA.

Publication date: July 24, 2016

Published in: conference

ISSN: 2308-3514

ISBN: 978-1-61208-494-7

Location: Nice, France

Dates: from July 24, 2016 to July 28, 2016