Topological effects in plasmonic metasurfaces

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Light-matter interactions in chiral structure can induce strong polarization selectivity. Specifically, an optical activity in a form of polarization rotation and a circular dichroism may be controlled by the the mirror symmetry breaking of the unit-cell geometry. We design and experimentally investigate plasmonic metasurfaces with spatially varying chiral geometry and demonstrate how this architecture may lead to a geometric Berry phase. Our designed structure produces a polarization-dependent diffraction of nearly linear states. We experimentally examine the diffraction orders and show that they are topological in nature. Moreover, the influence of various geometrical factors is also investigated.

Original languageEnglish
Title of host publication2022 16th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
PagesX175-X177
ISBN (Electronic)9781665465847
DOIs
StatePublished - 2022
Event16th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2022 - Siena, Italy
Duration: 12 Sep 202217 Sep 2022

Publication series

Name2022 16th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2022

Conference

Conference16th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2022
Country/TerritoryItaly
CitySiena
Period12/09/2217/09/22

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