Antimony-based superlattices for high-performance infrared imagers

Martin Walther; Robert Rehm; Johannes Schmitz; Frank Rutz; Joachim Fleissner; Johann Ziegler

doi:10.1117/12.777515

15 April 2008 Antimony-based superlattices for high-performance infrared imagers

Martin Walther, Robert Rehm, Johannes Schmitz, Frank Rutz, Joachim Fleissner, Johann Ziegler

Proceedings Volume 6940, Infrared Technology and Applications XXXIV; 69400A (2008) https://doi.org/10.1117/12.777515
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

InAs/GaSb short-period superlattices (SL) for the fabrication of mono- and bispectral thermal imaging systems in the mid-wavelength infrared region (MWIR) have been optimized in order to increase the spectral response of the imaging systems. The responsivity in monospectral InAs/GaSb short-period superlattices increases with the number of periods in the intrinsic region of the diode and does not show a diffusion limited behavior for detector structures with up to 1000 periods. This allows the fabrication of InAs/GaSb SL camera systems with high responsivity. Dual-color MWIR/MWIR InAs/GaSb SL camera systems with high quantum efficiency for missile approach warning systems with simultaneous and spatially coincident detection in both spectral channels have been realized.

Citation Download Citation

Martin Walther, Robert Rehm, Johannes Schmitz, Frank Rutz, Joachim Fleissner, and Johann Ziegler "Antimony-based superlattices for high-performance infrared imagers", Proc. SPIE 6940, Infrared Technology and Applications XXXIV, 69400A (15 April 2008); https://doi.org/10.1117/12.777515

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