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

Yuto Moritake; Yoshiaki Kanamori; Kazuhiro Hane

doi:10.1063/1.4936385

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

Yuto Moritake, Yoshiaki Kanamori, Kazuhiro Hane

Research output: Contribution to journal › Article › peer-review

25 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 language	English
Article number	211108
Journal	Applied Physics Letters
Volume	107
Issue number	21
DOIs	https://doi.org/10.1063/1.4936385
Publication status	Published - 2015 Nov 23

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4936385

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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.",

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AU - Kanamori, Yoshiaki

AU - Hane, Kazuhiro

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Y1 - 2015/11/23

N2 - 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.

AB - 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.

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

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