20 January 2012 High-performance LWIR superlattice detectors and FPA based on CBIRD design
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Abstract
We report our recent efforts on advancing of antimonide superlattice based infrared photodetectors and demonstration of focal plane arrays based on a complementary barrier infrared detector (CBIRD) design. By optimizing design and growth condition we succeeded to reduce the operational bias of CBIRD single pixel detector without increase of dark current or degradation of quantum efficiency. We demonstrated a 1024×1024 pixel longwavelength infrared focal plane array utilizing 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. These results advance state-of-the art of superlattice detectors and demonstrated advantages of CBIRD architecture for realization of FPA.
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Alexander Soibel, Alexander Soibel, Jean Nguyen, Jean Nguyen, Sir B. Rafol, Sir B. Rafol, Anna Liao, Anna Liao, Linda Hoeglund, Linda Hoeglund, Arezou Khoshakhlagh, Arezou Khoshakhlagh, Sam A. Keo, Sam A. Keo, Jason M. Mumolo, Jason M. Mumolo, John Liu, John Liu, David Z.-Y. Ting, David Z.-Y. Ting, Sarath D. Gunapala, Sarath D. Gunapala, } "High-performance LWIR superlattice detectors and FPA based on CBIRD design", Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82680Y (20 January 2012); doi: 10.1117/12.909614; https://doi.org/10.1117/12.909614
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