Plasmonic enhancement of the infrared radiation absorption in an ultrathin InSb layer
Yurii M. Lyaschuk, Vadym V. Korotyeyev, Viacheslav A. Kochelap, Oleksandr O. Raichev
TL;DR
This paper proposes a plasmonic structure to significantly enhance infrared absorption in ultrathin InSb layers, potentially enabling highly sensitive multi-color infrared detectors.
Contribution
Introduction of a novel plasmonic design that boosts infrared absorption in ultrathin InSb films for improved detector sensitivity.
Findings
Enhanced infrared absorption in InSb via plasmonic resonance
Potential for multi-color infrared detection applications
Foundation for developing highly sensitive infrared detectors
Abstract
Indium antimonide (InSb) is a fundamental material for infrared radiation detectors based on interband transitions. Its narrow bandgap enables detection of infrared radiation within the atmospheric window, while its high quantum efficiency ensures excellent sensitivity in InSb-based detectors. We propose a plasmonic structure that significantly enhances infrared absorption in an ultrathin InSb film. The resonant characteristics of this plasmonic enhancement effect could serve as a foundation for developing highly sensitive multi-color detectors.
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