Plasmonic toroidal response of four U-shaped resonant rings at optical frequencies

Yao-Wei Huang*, Wei Ting Chen, Pin Chieh Wu, Yuan Fong Chau, Din Ping Tsai, Vassili A. Fedotov, Vassili Savinov, Nikolay I. Zheludev

*Corresponding author for this work

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

Abstract

The toroidal spectral responses of solenoid-like toroidal metamolecule integrated by four gold U-shaped split-ring resonators (SRRs) at optical frequencies are numerically studied. By analyzing the electromagnetic distribution in near-field region at the plasmonic resonances, we found toroidal and magnetic resonances generated by magnetic dipoles around the SRRs at frequency 112.3 THz and 122.1 THz, respectively. Downsizing the structure achieve observation of a plasmonic toroidal mode at optical frequencies in four U-shaped SRRs.

Original languageEnglish
Title of host publicationFrontiers in Optics, FiO 2011
PublisherOptical Society of America (OSA)
ISBN (Print)9781557529176
DOIs
StatePublished - Oct 2011
EventFrontiers in Optics, FiO 2011 - San Jose, CA, United States
Duration: 16 Oct 201120 Oct 2011

Publication series

NameOptics InfoBase Conference Papers
ISSN (Electronic)2162-2701

Conference

ConferenceFrontiers in Optics, FiO 2011
CountryUnited States
CitySan Jose, CA
Period16/10/1120/10/11

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