Mid-wavelength and long-wavelength infrared focal planes for smallsat applications

Sarath Gunapala; David Ting; Sir Rafol; Alexander Soibel; Arezou Khoshakhlagh; Sam Keo; Brian Pepper; Anita Fisher; Cory Hill; Thomas Pagano; Ashok Sood; John Zeller; Paul Lucey; Rob Wright; Miguel Nunes; Sachidananda Babu; Parminder Ghuman

doi:10.1117/12.2619573

30 May 2022 Mid-wavelength and long-wavelength infrared focal planes for smallsat applications

Sarath Gunapala, David Ting, Sir Rafol, Alexander Soibel, Arezou Khoshakhlagh, Sam Keo, Brian Pepper, Anita Fisher, Cory Hill, Thomas Pagano, Ashok Sood, John Zeller, Paul Lucey, Rob Wright, Miguel Nunes, Sachidananda Babu, Parminder Ghuman

Author Affiliations +

Proceedings Volume 12091, Image Sensing Technologies: Materials, Devices, Systems, and Applications IX; 1209102 (2022) https://doi.org/10.1117/12.2619573
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, 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. Two 6U SmalSat missions CIRAS (Cubesat Infrared Atmospheric Sounder) and HyTI (Hyperspectral Thermal Imager) are 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. Furthermore, we will discuss the advantages of the utilization of all digital read out integrated circuits with HOT-BIRDs.

Conference Presentation

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Sarath Gunapala, David Ting, Sir Rafol, Alexander Soibel, Arezou Khoshakhlagh, Sam Keo, Brian Pepper, Anita Fisher, Cory Hill, Thomas Pagano, Ashok Sood, John Zeller, Paul Lucey, Rob Wright, Miguel Nunes, Sachidananda Babu, and Parminder Ghuman "Mid-wavelength and long-wavelength infrared focal planes for smallsat applications", Proc. SPIE 12091, Image Sensing Technologies: Materials, Devices, Systems, and Applications IX, 1209102 (30 May 2022); https://doi.org/10.1117/12.2619573

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