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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 26 — Dec. 24, 2007
  • pp: 17881–17890

Magnetic and electric excitations in split ring resonators

Jiangfeng Zhou, Thomas Koschny, and Costas M. Soukoulis  »View Author Affiliations


Optics Express, Vol. 15, Issue 26, pp. 17881-17890 (2007)
http://dx.doi.org/10.1364/OE.15.017881


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Abstract

We studied the electric and magnetic resonances of U-shaped SRRs. We showed that higher order excitation modes exist in both of the electric and magnetic resonances. The nodes in the current distribution were found for all the resonance modes. It turns out that the magnetic resonances are the modes with odd-number of half-wavelength of the current wave, i.e. λ/2, 3λ/2 and 5λ/2 modes, and the electric resonances are modes with integer number of whole-wavelength of current wave, i.e. λ, 2λ and 3λ modes. We discussed the electric moment and magnetic moment of the electric and magnetic resonances, and their dependence to the length of two parallel side arms. We show that the magnetic moment of magnetic resonance vanishes as the length of side arms of the SRR reduces to zero, i.e. a rod does not give any magnetic moment or magnetic resonance.

© 2007 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(260.5740) Physical optics : Resonance
(350.3618) Other areas of optics : Left-handed materials
(160.3918) Materials : Metamaterials

ToC Category:
Metamaterials

History
Original Manuscript: October 3, 2007
Revised Manuscript: November 16, 2007
Manuscript Accepted: November 19, 2007
Published: December 14, 2007

Citation
Jiangfeng Zhou, Thomas Koschny, and Costas M. Soukoulis, "Magnetic and electric excitations in split ring resonators," Opt. Express 15, 17881-17890 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-26-17881


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