Double fano resonances in a composite metamaterial possessing tripod plasmonic resonances

Y. U. Lee, E. Y. Choi, E. S. Kim, J. H. Woo, B. Kang, J. Kim, Byung Cheol Park, T. Y. Hong, Jae Hoon Kim, J. W. Wu

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

By embedding four-rod resonators inside a double-split ring resonator superlattice, a planar composite metamaterial possessing tripod plasmonic resonances is fabricated. Double Fano resonances are observed where a common subradiant driven oscillator is coupled with two superradiant oscillators. As a classical analogue of a four-level tripod atomic system, the extinction spectrum of the composite metamaterial exhibits a coherent effect based on double Fano resonances. Transfer of the absorbed power between two orthogonal superradiant oscillators is shown to be mediated by the common subradiant oscillator.

Original languageEnglish
Article number025103
JournalJournal of Optics (United Kingdom)
Volume17
Issue number2
DOIs
StatePublished - 1 Feb 2015

Keywords

  • Fano resonance
  • Metamaterial
  • Terahertz spectroscopy

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