Superlattice barrier infrared detector development at the Jet Propulsion Laboratory

David Z. Ting; Alexander Soibel; Sir B. Rafol; Jean Nguyen; Linda Höglund; Arezou Khoshakhlagh; Sam A. Keo; John K. Liu; Jason M. Mumolo; Sarath D. Gunapala

doi:10.1117/12.888094

20 May 2011 Superlattice barrier infrared detector development at the Jet Propulsion Laboratory

David Z. Ting, Alexander Soibel, Sir B. Rafol, Jean Nguyen, Linda Höglund, Arezou Khoshakhlagh, Sam A. Keo, John K. Liu, Jason M. Mumolo, Sarath D. Gunapala

Author Affiliations +

Proceedings Volume 8012, Infrared Technology and Applications XXXVII; 801214 (2011) https://doi.org/10.1117/12.888094
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

We report recent efforts in achieving state-of-the-art performance in type-II superlattice based infrared photodetectors using the barrier infrared detector architecture. We used photoluminescence measurements for evaluating detector material and studied the influence of the material quality on the intensity of the photoluminescence. We performed direct noise measurements of the superlattice detectors and demonstrated that while intrinsic 1/f noise is absent in superlattice heterodiode, side-wall leakage current can become a source of strong frequency-dependent noise. We developed an effective dry etching process for these complex antimonide-based superlattices that enabled us to fabricate single pixel devices as well as large format focal plane arrays. We describe the demonstration of a 1024×1024 pixel long-wavelength infrared focal plane array based the complementary barrier infrared detector (CBIRD) design. An 11.5 μm cutoff focal plane without anti-reflection coating has yielded noise equivalent differential temperature of 53 mK at operating temperature of 80 K, with 300 K background and cold-stop. Imaging results from a recent 10 μm cutoff focal plane array are also presented.

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David Z. Ting, Alexander Soibel, Sir B. Rafol, Jean Nguyen, Linda Höglund, Arezou Khoshakhlagh, Sam A. Keo, John K. Liu, Jason M. Mumolo, and Sarath D. Gunapala "Superlattice barrier infrared detector development at the Jet Propulsion Laboratory", Proc. SPIE 8012, Infrared Technology and Applications XXXVII, 801214 (20 May 2011); https://doi.org/10.1117/12.888094

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