Proceedings Paper
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Paper Abstract
Rigorous electromagnetic field modeling is applied to calculate the quantum efficiency (QE) of various quantum well
infrared photodetector (QWIP) geometries. We found quantitative agreement between theory and experiment for linear
grating coupled QWIPs, cross-grating coupled QWIPs, corrugated-QWIPs, and enhanced-QWIPs. Also, the model
adequately explains the spectral lineshapes of the quantum grid infrared photodetectors. Equipped with a quantitative
model, we designed resonant cavities that are suitable for narrowband imaging around 8 - 9 microns. The results show
that with properly designed structures, the theoretical QE can be as high as 78% for 25-micron pixel pitch arrays and
46% for 12-micron pixel pitch arrays. Experimental efforts are underway.
Paper Details
Date Published: 20 January 2012
PDF: 9 pages
Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82682O (20 January 2012); doi: 10.1117/12.903605
Published in SPIE Proceedings Vol. 8268:
Quantum Sensing and Nanophotonic Devices IX
Manijeh Razeghi; Eric Tournie; Gail J. Brown, Editor(s)
PDF: 9 pages
Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82682O (20 January 2012); doi: 10.1117/12.903605
Show Author Affiliations
K. K. Choi, U.S. Army Research Lab. (United States)
M. D. Jhabvala, NASA Goddard Space Flight Ctr. (United States)
D. P. Forrai, L-3 Communications Cincinnati Electronics (United States)
M. D. Jhabvala, NASA Goddard Space Flight Ctr. (United States)
D. P. Forrai, L-3 Communications Cincinnati Electronics (United States)
A. Waczynaski, NASA Goddard Space Flight Ctr. (United States)
J. Sun, U.S. Army Research Lab. (United States)
R. Jones, L-3 Communications Cincinnati Electronics (United States)
J. Sun, U.S. Army Research Lab. (United States)
R. Jones, L-3 Communications Cincinnati Electronics (United States)
Published in SPIE Proceedings Vol. 8268:
Quantum Sensing and Nanophotonic Devices IX
Manijeh Razeghi; Eric Tournie; Gail J. Brown, Editor(s)
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