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31 January 2020 QWIPs, SLS, Landsat and the International Space Station
Murzy Jhabvala, Kwong-Kit Choi, Sarath Gunapala, Manijeh Razeghi, Mani Sundaram
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Proceedings Volume 11288, Quantum Sensing and Nano Electronics and Photonics XVII; 1128802 (2020) https://doi.org/10.1117/12.2539147
Event: SPIE OPTO, 2020, San Francisco, California, United States
Abstract
In 1988 DARPA provided funding to NASA’s Goddard Space Flight Center to support the development of GaAs Quantum Well Infrared Photodetectors (QWIP). The goal was to make a single element photodetector that might be expandable to a two-dimensional array format. Ultimately, this led to the development of a 128 x 128 element array in collaboration with AT&T Bell Labs and Rockwell Science Center in 1990. We continued to develop numerous generations of QWIP arrays most recently resulting in the multi-QWIP focal plane for the NASA-US Geological Survey (USGS) Landsat 8 mission launched in 2013 and a similar instrument on the Landsat 9 mission to be launched in 2020. Toward the end of the Landsat 8 QWIP-based Thermal Infrared Sensor (TIRS) instrument the potential of the newly developed Strained Layer Superlattice (SLS) detector array technology became of great interest to NASA for three primary reasons: 1) higher operating temperature; 2) broad spectral response and; 3) higher sensitivity. We have collaborated extensively with QmagiQ, LLC and Northwestern University to further pursue and advance the SLS technology ever since we started back in 2012. In December of 2018 we launched the first SLS-based IR camera system to the International Space Station on board the Robotic Refueling Mission #3 (RRM3). This paper will describe the evolution of QWIP technology leading to the current development of SLS-based imaging systems at the Goddard Space Flight Center over the past 30 years.
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Murzy Jhabvala, Kwong-Kit Choi, Sarath Gunapala, Manijeh Razeghi, and Mani Sundaram "QWIPs, SLS, Landsat and the International Space Station", Proc. SPIE 11288, Quantum Sensing and Nano Electronics and Photonics XVII, 1128802 (31 January 2020); https://doi.org/10.1117/12.2539147
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KEYWORDS
Quantum well infrared photodetectors
Laser sintering
Earth observing sensors
Landsat
Sensors
Cameras
Infrared imaging
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