Electromagnetic Modeling of Quantum Well Infrared Photodetectors

Electromagnetic Modeling of Quantum Well Infrared Photodetectors

Rigorous electromagnetic field modeling is applied to calculate the quantum efficiency of various quantum well infrared photodetector (QWIP) geometries. We found quantitative agreement between theory and experiment for corrugated-QWIPs, grating-coupled QWIPs, and enhanced-QWIPs, and the model explai...

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Veröffentlicht in:IEEE journal of quantum electronics 2012-03, Vol.48 (3), p.384-393
Hauptverfasser: Kwong-Kit Choi, Jhabvala, M. D., Forrai, D. P., Waczynski, A., Sun, J., Jones, R.
Format: Artikel
Sprache:eng
Schlagworte:
Atmospheric modeling
Coatings
Detectors
Electromagnetic field modeling
Geometry
Gold
Gratings
infrared detector
Materials
quantum efficiency
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Zusammenfassung:Rigorous electromagnetic field modeling is applied to calculate the quantum efficiency of various quantum well infrared photodetector (QWIP) geometries. We found quantitative agreement between theory and experiment for corrugated-QWIPs, grating-coupled QWIPs, and enhanced-QWIPs, and the model explains adequately the spectral lineshapes of the quantum grid infrared photodetectors. After establishing our theoretical approach, we used the model to optimize the detector structures for 12-micron pixel pitch focal plane arrays.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2011.2175706