Electromagnetically induced transparency like transmission in a metamaterial composed of cut-wire pairs with indirect coupling

Abstract

We theoretically and numerically investigate metamaterials composed of coupled resonators with indirect coupling. First, we theoretically analyze a mechanical model of coupled resonators with indirect coupling. The theoretical analysis shows that an electromagnetically induced transparency (EIT)-like phenomenon with a transparency bandwidth narrower than the resonance linewidths of the constitutive resonators can occur in the metamaterial with strong indirect coupling. We then numerically examine the characteristics of the metamaterial composed of coupled cut-wire pairs using a finite-difference time-domain (FDTD) method. The FDTD simulation confirms that an EIT-like transparency phenomenon occurs in the metamaterial owing to indirect coupling. Finally, we compare the results of the theoretical and numerical analyses. The behavior of the EIT-like metamaterial is found to be well described by the mechanical model of the coupled resonators.

arXiv comment7 pages, 7 figures

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• Resolution of hyperfine transitions in metastable 83Kr using Electromagnetically Induced Transparency
• Tunable group delay in a doubly resonant metasurface composed of two dissimilar split-ring resonators
• Microplasma generation by slow microwave in an electromagnetically induced transparency-like metasurface
• Frequency mixing at an electromagnetically induced transparency like metasurface loaded with gas as a nonlinear element
• Frequency shifts of radiating particle moving in EIT metamaterial
• Broadband control of group delay using the Brewster effect in metafilms
• Low-power threshold gas discharge by enhanced local electric field in electromagnetically-induced-transparencylike metamolecules