Quasi-dark Mode in a Metamaterial for Analogous Electromagnetically-induced Transparency

Details Quasi-dark Mode in a Metamaterial for Analogous Electromagnetically-induced Transparency Quasi-dark Mode in a Metamaterial for Analogous Electromagnetically-induced Transparency

2010-05-13

arxiv.org/abs/1005.2284v1

Physics

Optics

11 pages, 4 figures

Scientific paper

We study a planar metamaterial supporting electromagnetically-induced transparency (EIT)-like effect by exploiting the coupling between bright and quasi-dark eigenmodes. The specific design of such a metamaterial consists of a cut-wire (CW) and a single-gap split-ring resonator (SRR). From the numerical and the analytical results we demonstrate that the response of SRR, which is weakly excited by external electric field, is mitigated to be a quasi-dark eigenmode in the presence of strongly radiative CW. This result suggests more relaxed conditions for the realization of devices utilizing the EIT-like effects in metamaterial, and thereby widens the possibilities for many different structural implementations.

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