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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 2 — Jan. 16, 2012
  • pp: 1760–1768

Design of plasmonic toroidal metamaterials at optical frequencies

Yao-Wei Huang, Wei Ting Chen, Pin Chieh Wu, Vassili Fedotov, Vassili Savinov, You Zhe Ho, Yuan-Fong Chau, Nikolay I. Zheludev, and Din Ping Tsai  »View Author Affiliations

Optics Express, Vol. 20, Issue 2, pp. 1760-1768 (2012)

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Toroidal multipoles are the subject of growing interest because of their unusual electromagnetic properties different from the electric and magnetic multipoles. In this paper, we present two new related classes of plasmonic metamaterial composed of purposely arranged of four U-shaped split ring resonators (SRRs) that show profound resonant toroidal responses at optical frequencies. The toroidal and magnetic responses were investigated by the finite-element simulations. A phenomenon of reversed toroidal responses at higher and lower resonant frequencies has also been reported between this two related metamaterials which results from the electric and magnetic dipoles interaction. Finally, we propose a physical model based on coupled LC circuits to quantitatively analyze the coupled system of the plasmonic toroidal metamaterials.

© 2012 OSA

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(240.6680) Optics at surfaces : Surface plasmons
(160.3918) Materials : Metamaterials
(250.5403) Optoelectronics : Plasmonics

ToC Category:

Original Manuscript: November 30, 2011
Revised Manuscript: December 24, 2011
Manuscript Accepted: January 3, 2012
Published: January 11, 2012

Yao-Wei Huang, Wei Ting Chen, Pin Chieh Wu, Vassili Fedotov, Vassili Savinov, You Zhe Ho, Yuan-Fong Chau, Nikolay I. Zheludev, and Din Ping Tsai, "Design of plasmonic toroidal metamaterials at optical frequencies," Opt. Express 20, 1760-1768 (2012)

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