Enhanced emission and light control with tapered plasmonic nanoantennas
Ivan S. Maksymov, Arthur R. Davoyan, Yuri S. Kivshar
TL;DR
This paper presents a novel design of tapered Yagi-Uda plasmonic nanoantennas that significantly improve emission directivity and control over light emission angles, with optimized tapering for maximum performance.
Contribution
Introduction of a tapered Yagi-Uda plasmonic nanoantenna design that enhances gain and emission control, with analysis of optimal tapering angles for improved directivity.
Findings
Tapering reduces element spacing tenfold.
Enhanced emission directivity achieved.
Optimal tapering angle identified.
Abstract
We introduce a design of Yagi-Uda plasmonic nanoantennas for enhancing the antenna gain and achieving control over the angular emission of light. We demonstrate that tapering of antenna elements allows to decrease spacing between the antenna elements tenfold also enhancing its emission directivity. We find the optimal tapering angle that provides the maximum directivity enhancement and the minimum end-fire beamwidth.
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