Large group delay in a microwave metamaterial analogue of electromagnetically induced transparency

Details Large group delay in a microwave metamaterial analogue of electromagnetically induced transparency Large group delay in a microwave metamaterial analogue of electromagnetically induced transparency

2010-10-14

arxiv.org/abs/1010.2976v2

Appl. Phys. Lett. 97, 241904 (2010)

Physics

Condensed Matter

Materials Science

4 pages, 5 figures

Scientific paper

10.1063/1.3525925

We report on our experimental work concerning a planar metamaterial exhibiting classical electromagnetically induced transparency (EIT). Using a structure with two mirrored split-ring resonators as the dark element and a cut wire as the radiative element, we demonstrate that an EIT-like resonance can be achieved without breaking the symmetry of the structure. The mirror symmetry of the metamaterial's structural element results in a selection rule inhibiting magnetic dipole radiation for the dark element, and the increased quality factor leads to low absorption (<10%) and large group index (of the order of 30).

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