Generation of surface plasmon vortex under linearly-polarized optical excitation in a gold metasurface

Chen-Ta Ku; Ching-Fu Chen; Chen-Bin Huang

doi:10.1364/FIO.2014.FTh4E.2

Frontiers in Optics 2014
OSA Technical Digest (online) (Optica Publishing Group, 2014),
paper FTh4E.2
•https://doi.org/10.1364/FIO.2014.FTh4E.2

Generation of surface plasmon vortex under linearly-polarized optical excitation in a gold metasurface

Chen-Ta Ku, Ching-Fu Chen, and Chen-Bin Huang

Frontiers in Optics 2014

Tucson, Arizona United States
19–23 October 2014
ISBN: 1-55752-286-3

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Optical Antennas and Plasmonic Waveguide Devices (FTh4E)

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C. Ku, C. Chen, and C. Huang, "Generation of surface plasmon vortex under linearly-polarized optical excitation in a gold metasurface," in Frontiers in Optics 2014, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper FTh4E.2.

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Abstract

A nanocavity in a gold thin film is optimized and arranged to form a metasurface. We numerically demonstrate that surface plasmon vortex carrying orbital angular momentum can be generated under linearly-polarized optical excitation.

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