20 January 2012 Evolution of QWIP focal plane development at the NASA/Goddard Space Flight Center
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Abstract
The development of GaAs quantum well infrared photodetectors (QWIPs) at NASA's Goddard Space Flight Center began in the late 1980s and has continued ever since. Initial developments produced single element detectors and shortly thereafter in 1990 a 128× 128 element array was developed in collaboration with AT&T Bell Labs and Rockwell Science Center. Since that time we have developed numerous generations of QWIP arrays most recently resulting in the multi-QWIP focal plane for the next NASA-US Geological Survey Landsat mission to be launched in December of 2012. This paper will describe the technological evolutionary process from concept to a space-flight qualified infrared detector system. Many developments have been accomplished in the ensuing two decades as well as numerous experiments, both ground-based and airborne en route to qualifying for a NASA space flight mission. Some of these experiments will also be described as well as our current development for the next generation of QWIP focal planes for potential earth observing missions.
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M. Jhabvala, K. Choi, "Evolution of QWIP focal plane development at the NASA/Goddard Space Flight Center", Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82682P (20 January 2012); doi: 10.1117/12.903680; https://doi.org/10.1117/12.903680
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