Extended cut-off wavelength nBn detector utilizing InAsSb/InSb digital alloy absorber

A. Soibel; D. Z. Ting; C. J. Hill; Anita M. Fisher; Linda Hoglund; Sam A. Keo; Sarath D. Gunapala

doi:10.1117/12.2251703

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27 January 2017 Extended cut-off wavelength nBn detector utilizing InAsSb/InSb digital alloy absorber

A. Soibel, D. Z. Ting, C. J. Hill, Anita M. Fisher, Linda Hoglund, Sam A. Keo, Sarath D. Gunapala

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Proceedings Volume 10111, Quantum Sensing and Nano Electronics and Photonics XIV; 1011114 (2017) https://doi.org/10.1117/12.2251703
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We investigated a novel approach to extend a cut-off wavelength of Sb-based nBn detectors. We incorporated a series of single InSb monolayer into InAsSb bulk that allowed to realize a digital alloy absorber with an extended cut-off wavelength of λ = 4.6 μm at T = 200 K. The cut-off wavelength extension to 4.6μm is technologically important for realization of detectors covering CO₂ absorption line at 4.26μm.

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A. Soibel, D. Z. Ting, C. J. Hill, Anita M. Fisher, Linda Hoglund, Sam A. Keo, and Sarath D. Gunapala "Extended cut-off wavelength nBn detector utilizing InAsSb/InSb digital alloy absorber", Proc. SPIE 10111, Quantum Sensing and Nano Electronics and Photonics XIV, 1011114 (27 January 2017); https://doi.org/10.1117/12.2251703

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