10- to 16-um broadband 640 x 512 GaAs/AlGaAs quantum well infrared photodetector (QWIP) focal plane array

Sarath D. Gunapala; Sumith V. Bandara; John K. Liu; S. B. Rafol; Jason M. Mumolo; Francis M. Reininger; J. M. Fastenau; A. K. Liu

doi:10.1117/12.445352

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10 October 2001 10- to 16-μm broadband 640 x 512 GaAs/AlGaAs quantum well infrared photodetector (QWIP) focal plane array

Sarath D. Gunapala, Sumith V. Bandara, John K. Liu, S. B. Rafol, Jason M. Mumolo, Francis M. Reininger, J. M. Fastenau, A. K. Liu

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Proceedings Volume 4369, Infrared Technology and Applications XXVII; (2001) https://doi.org/10.1117/12.445352
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

A 10-16 μm cutoff large format broadband quantum well infrared photodetector (QWIP) focal plane array (FPA) has been demonstrated. The size of the FPA is 640 X 512 and its pixel pitch is 25 microns. The highest operating temperature of the FPA is 45 K, and it was determined by the charge storage capacity and the other features of the particular readout multiplexer used in this demonstration. Excellent imagery, with a noise equivalent differential temperature (NE(Delta) T) of 55 mK has been achieved. In this presentation, we will discuss the development of this large format broadband infrared FPA based on a GaAs/AlGaAs materials system and its performance in quantum efficiency, NE(Delta) T, uniformity, and operability.

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Sarath D. Gunapala, Sumith V. Bandara, John K. Liu, S. B. Rafol, Jason M. Mumolo, Francis M. Reininger, J. M. Fastenau, and A. K. Liu "10- to 16-μm broadband 640 x 512 GaAs/AlGaAs quantum well infrared photodetector (QWIP) focal plane array", Proc. SPIE 4369, Infrared Technology and Applications XXVII, (10 October 2001); https://doi.org/10.1117/12.445352

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