Calculation and optimization of electromagnetic resonances and local intensity enhancements for plasmon metamaterials with sub-wavelength double-slots

L. Han, S. Chen, A. Schülzgenx, Y. Zeng, F. Song, J. Tian, N. Peyghambarian

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We propose two metamaterials with sub-wavelength double-slots ⌋ single-side double-slot metamaterial and double-side double-slot metamaterial. The dependence of the electromagnetic resonances and local intensity enhancements on the structural parameters is studied by thefnite-difference time-domain technique and thefnite element method. Results show that the central-arm of a double-slot structure strongly influences frequency and local intensities at both highand low-frequency resonances. Very strongfeld localization can be achieved at the high-frequency resonance and its particular distribution can be well controlled by the width of the central-arm. A double-side double-slot structure can be utilized to separately enhance the high-frequency resonance, while suppressing the low-frequency resonance. The simulation results are discussed in terms of plasmon resonances.

Original languageEnglish (US)
Pages (from-to)161-177
Number of pages17
JournalProgress in Electromagnetics Research
Volume113
DOIs
StatePublished - 2011

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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