Enhanced quality factor of Fano resonance in optical metamaterials by manipulating configuration of unit cells

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20 Citations (Scopus)

Abstract

By changing unit cell configurations, we demonstrated enhancement of quality factors (Q-factors) of Fano resonance in optical metamaterials composed of asymmetric double bars. The Q-factors of Fano resonance at wavelengths around 1500 nm were extracted from absorption spectra, and the dependence of the degree of asymmetry was studied. Observed enhancement is qualitatively interpreted by dipole-dipole interactions, and destructive interactions were essential for achieving high Q-factors. These results will be useful for improving performance of potential applications using metamaterial resonators such as light emitting devises and sensors.

Original languageEnglish
Article number211108
JournalApplied Physics Letters
Volume107
Issue number21
DOIs
Publication statusPublished - 2015 Nov 23

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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