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Proceedings Paper

Electromagnetic design of resonator-QWIPs
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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: 21 January 2012
PDF: 9 pages
Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82682O (21 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)
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)


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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