Applications of T2SL barrier infrared detectors in Earth observational instruments

Sarath Gunapala; William Johnson; David Ting; Alexander Soibel; Sir (Don) Rafol; Sam Keo; Brian Pepper; Cory Hill; Olga Kalashnikova; Michael Garay; Ashley Davies; Ashok Sood; John Zeller; Paul Lucey; Robert Wright; Miguel Nunes; Sachidananda Babu; Parminder Ghuman

doi:10.1117/12.3014555

7 June 2024 Applications of T2SL barrier infrared detectors in Earth observational instruments

Sarath Gunapala, William Johnson, David Ting, Alexander Soibel, Sir (Don) Rafol, Sam Keo, Brian Pepper, Cory Hill, Olga Kalashnikova, Michael Garay, Ashley Davies, Ashok Sood, John Zeller, Paul Lucey, Robert Wright, Miguel Nunes, Sachidananda Babu, Parminder Ghuman

Author Affiliations +

Proceedings Volume 13030, Image Sensing Technologies: Materials, Devices, Systems, and Applications XI; 1303003 (2024) https://doi.org/10.1117/12.3014555
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

In this presentation, we will report our recent efforts in achieving high performance in Antimonides type-II superlattice (T2SL) based infrared photodetectors using the barrier infrared detector (BIRD) architecture. The high operating temperature (HOT) BIRD focal plane arrays (FPAs) offer the same high performance, uniformity, operability, manufacturability, and affordability advantages as InSb. However, mid-wavelength infrared (MWIR) HOT-BIRD FPAs can operate at significantly higher temperatures (>150K) than InSb FPAs (typically 80K). Moreover, while InSb has a fixed cutoff wavelength (~5.4 µm), the HOT-BIRD offers a continuous adjustable cutoff wavelength, ranging from ~4 µm to >15 µm, and is therefore also suitable for long wavelength infrared (LWIR) as well. The LWIR detectors based on the BIRD architecture has also demonstrated significant operating temperature advantages over those based on traditional p-n junction designs. HyTI (Hyperspectral Thermal Imager) and c-FIRST (compact Fire Infrared Radiance Spectral Tracker) based on JPL's T2SL BIRD FPAs. Based on III-V compound semiconductors, the BIRD FPAs offer a breakthrough solution for the realization of low cost (high yield), high-performance FPAs with excellent uniformity and pixel-to-pixel operability.

Conference Presentation

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Sarath Gunapala, William Johnson, David Ting, Alexander Soibel, Sir (Don) Rafol, Sam Keo, Brian Pepper, Cory Hill, Olga Kalashnikova, Michael Garay, Ashley Davies, Ashok Sood, John Zeller, Paul Lucey, Robert Wright, Miguel Nunes, Sachidananda Babu, and Parminder Ghuman "Applications of T2SL barrier infrared detectors in Earth observational instruments", Proc. SPIE 13030, Image Sensing Technologies: Materials, Devices, Systems, and Applications XI, 1303003 (7 June 2024); https://doi.org/10.1117/12.3014555

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