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Long-wavelength 640 x 484 GaAs/Al x Ga 1-x As quantum well infrared photodetector focal plane array camera

Sarath D. Gunapala, Sumith V. Bandara, John K. Liu, Winn Hong, Mani Sundaram, Ronald J. Carralejo, C. A. Shott, P. D. Maker, Richard E. Muller

Open publisher page 16 citations

Abstract

A 9 micrometer cutoff 640 by 484 hand-held quantum well infrared photodetector (QWIP) camera has been demonstrated. Excellent imagery, with a noise equivalent differential temperature (NE(Delta) T) of 43 mK has been achieved. In this paper, we discuss the development of this very sensitive long wavelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array (FPA) and its performance in quantum efficiency, NE(Delta) T, uniformity, and operability.

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What this paper is about

A 9 micrometer cutoff 640 by 484 hand-held quantum well infrared photodetector (QWIP) camera has been demonstrated. Excellent imagery, with a noise equivalent differential temperature (NE(Delta) T) of 43 mK has been achieved. In this paper, we discuss the development of this very sensitive long wavelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array (FPA) and its performance in quantum efficiency, NE(Delta) T, uniformity, and operability.

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Available abstract

A 9 micrometer cutoff 640 by 484 hand-held quantum well infrared photodetector (QWIP) camera has been demonstrated. Excellent imagery, with a noise equivalent differential temperature (NE(Delta) T) of 43 mK has been achieved. In this paper, we discuss the development of this very sensitive long wavelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array (FPA) and its performance in quantum efficiency, NE(Delta) T, uniformity, and operability.

Key concepts: Quantum well infrared photodetector, Photodetector, Infrared, Cardinal point, Optics, Optoelectronics, Quantum efficiency, Quantum well

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