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11 October 2022 Development of T2SLS LWIR focal plane arrays for the Hyperspectral Thermal Imager (HyTI) (Conference Presentation)
Sarath D. Gunapala, David Z. Ting, Sir B. Rafol, Alexander Soibel, Sam A. Keo, Arezou Khoshakhlagh, Brian J. Pepper, Anita M. Fisher, Cory J. Hill, Paul Lucey, Robert Wright, Miguel Nunes, Luke Flynn, Ashok Sood, Sachidananda Babu, Parminder Ghuman
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Proceedings Volume PC12234, Infrared Sensors, Devices, and Applications XII; PC1223405 (2022) https://doi.org/10.1117/12.2631550
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States
Abstract
Hyperspectral Thermal Imager (HyTI) is NASA Earth Science Technology Office’s In-space Validation of Earth Science Technologies (InVEST) 2018 funded project to space qualify the strained layer superlattice based Barrier Infrared Detector (BIRD) Focal Plane Array [1] and Fabry-Perot Interferometer amongst other technologies. Its science goal is to monitor the global hydrological cycles and water resources, and develop a detailed understanding of the movement, distribution and availability of water and its variability over time. The heart of the HyTI hyperspectral imager is a 2-dimensional, BIRD FPA designed and developed at JPL. The engineering model of the HyTI instrument was based on a FPA without anti-reflection coating (ARC), which had 24% and 18% quantum efficiency in 8-9.4 m and 8-10.7 m spectral bands respectively at 68K operating temperature. We have deposited a novel nanotechnology based [2] ARC on flight FPA and it produced 31% and 24% quantum efficiency in 8-9.4 m and 8-10.7 m spectral bands respectively at 68K operating temperature. During this presentation we will discuss the development of LWIR BIRD FPAs for the HyTI project.
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Sarath D. Gunapala, David Z. Ting, Sir B. Rafol, Alexander Soibel, Sam A. Keo, Arezou Khoshakhlagh, Brian J. Pepper, Anita M. Fisher, Cory J. Hill, Paul Lucey, Robert Wright, Miguel Nunes, Luke Flynn, Ashok Sood, Sachidananda Babu, and Parminder Ghuman "Development of T2SLS LWIR focal plane arrays for the Hyperspectral Thermal Imager (HyTI) (Conference Presentation)", Proc. SPIE PC12234, Infrared Sensors, Devices, and Applications XII, PC1223405 (11 October 2022); https://doi.org/10.1117/12.2631550
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KEYWORDS
Staring arrays
Hyperspectral imaging
Thermography
Long wavelength infrared
Quantum efficiency
Antireflective coatings
Earth sciences
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