A voltage-tunable multiband quantum dot infrared focal plane array with high photodetectivity

Xuejun Lu; Jarrod Vaillancourt; Mark J. Meisner

doi:10.1117/12.777349

15 April 2008 A voltage-tunable multiband quantum dot infrared focal plane array with high photodetectivity

Xuejun Lu, Jarrod Vaillancourt, Mark J. Meisner

Proceedings Volume 6940, Infrared Technology and Applications XXXIV; 694007 (2008) https://doi.org/10.1117/12.777349
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

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 2.3×10¹⁰cmHz^1/2/W were obtained for the various detection bands. Voltage-controllable detection band selection enables real-time image contrast enhancement and discrimination.

Citation Download Citation

Xuejun Lu, Jarrod Vaillancourt, and Mark J. Meisner "A voltage-tunable multiband quantum dot infrared focal plane array with high photodetectivity", Proc. SPIE 6940, Infrared Technology and Applications XXXIV, 694007 (15 April 2008); https://doi.org/10.1117/12.777349

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