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Polarization-controlled dynamically switchable plasmon-induced transparency in plasmonic metamaterial

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Abstract

Dynamical manipulation of plasmon-induced transparency (PIT) in metamaterials promises numerous potential applications; however, previously reported approaches require complex metamaterial structures or an external stimulus, and dynamic control is limited to a single PIT transparency window. We propose here a metamaterial with a simple structure to realize a dynamically controllable PIT effect. Simply by changing the polarization direction of incident light, the number of PIT transparency windows can be increased from 1 to 2, accompanied by a tunable amplitude and a switchable resonance-wavelength. Moreover, a coupled three-level plasmonic system is employed to explain the underlying mechanism and near-field coupling between the horizontal and vertical gold bars, and the analytical results show good consistency with the numerical calculations. This work provides a simple approach for designing compact and tunable PIT devices and has potential applications in selective filtering, plasmonic switching and optical sensing.

Graphical abstract: Polarization-controlled dynamically switchable plasmon-induced transparency in plasmonic metamaterial

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Publication details

The article was received on 02 May 2018, accepted on 24 Sep 2018 and first published on 25 Sep 2018


Article type: Paper
DOI: 10.1039/C8NR03564D
Citation: Nanoscale, 2018, Advance Article
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    Polarization-controlled dynamically switchable plasmon-induced transparency in plasmonic metamaterial

    Y. Ling, L. Huang, W. Hong, T. Liu, J. Luan, W. Liu, J. Lai and H. Li, Nanoscale, 2018, Advance Article , DOI: 10.1039/C8NR03564D

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