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Proceedings Paper

A voltage-tunable multiband quantum dot infrared focal plane array with high photodetectivity
Author(s): Xuejun Lu; Jarrod Vaillancourt; Mark J. Meisner
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Paper Abstract

A voltage-tunable multi-band quantum dot infrared focal plane array (FPA) is reported. The FPA consists of a 320x256 quantum dot infrared photodetector (QDIP) array hybridized to a readout integrated circuit (ROIC). Each of the QDIP pixels consists of vertically-stacked InAs quantum dots layers with three different capping layers for multi-band (SWIR, MWIR, and LWIR) absorption. By tuning the bias voltage, the FPA is capable of detecting infrared bands individually or simultaneously. High photodetectivity values of greater than 2.3×1010cmHz1/2/W were obtained for the various detection bands. Voltage-controllable detection band selection enables real-time image contrast enhancement and discrimination.

Paper Details

Date Published: 15 April 2008
PDF: 5 pages
Proc. SPIE 6940, Infrared Technology and Applications XXXIV, 694007 (15 April 2008); doi: 10.1117/12.777349
Show Author Affiliations
Xuejun Lu, Univ. of Massachusetts/Lowell (United States)
Jarrod Vaillancourt, Univ. of Massachusetts/Lowell (United States)
Mark J. Meisner, Raytheon Missile Systems (United States)

Published in SPIE Proceedings Vol. 6940:
Infrared Technology and Applications XXXIV
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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