Quantum well infrared photodetectors for low-background applications

Sarath D. Gunapala; Sumith V. Bandara; Anjali Singh; John K. Liu; Edward M. Luong; Jason M. Mumolo; M. J. McKelvey

doi:10.1117/12.317590

22 July 1998 Quantum well infrared photodetectors for low-background applications

Sarath D. Gunapala, Sumith V. Bandara, Anjali Singh, John K. Liu, Edward M. Luong, Jason M. Mumolo, M. J. McKelvey

Author Affiliations +

Proceedings Volume 3379, Infrared Detectors and Focal Plane Arrays V; (1998) https://doi.org/10.1117/12.317590
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

High performance long-wavelength GaAs/Al_xGa_1-xAs quantum well infrared photodetectors for low background applications have been demonstrated. This is the first theoretical analysis of quantum well infrared photodetectors for low background applications and the detectivity D* of 6 X 10¹³ cm(root)Hz/W has been achieved at T equals 40 K with 2 X 10⁹ photons/cm²/sec background. In addition, this paper describes the demonstration of mid- wavelength/long-wavelength dualband quantum well infrared photodetectors and long-wavelength/very long-wavelength dualband quantum well infrared photodetectors in 4 - 26 micrometer wavelength region.

Citation Download Citation

Sarath D. Gunapala, Sumith V. Bandara, Anjali Singh, John K. Liu, Edward M. Luong, Jason M. Mumolo, and M. J. McKelvey "Quantum well infrared photodetectors for low-background applications", Proc. SPIE 3379, Infrared Detectors and Focal Plane Arrays V, (22 July 1998); https://doi.org/10.1117/12.317590

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