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Low-loss metamaterial electromagnetically induced transparency based on electric toroidal dipolar response
Ist Teil von
Applied physics letters, 2015-02, Vol.106 (8)
Ort / Verlag
Melville: American Institute of Physics
Erscheinungsjahr
2015
Link zum Volltext
Quelle
American Institute of Physics
Beschreibungen/Notizen
In this paper, a low-loss and high transmission analogy of electromagnetically induced transparency based on electric toroidal dipolar response is numerically and experimentally demonstrated. It is obtained by the excitation of the low-loss electric toroidal dipolar response, which confines the magnetic field inside a dielectric substrate with toroidal geometry. The metamaterial electromagnetically induced transparency (EIT) structure is composed of the cut wire and asymmetric split-ring resonators. The transmission level is as high as 0.88, and the radiation loss is greatly suppressed, which can be proved by the surface currents distributions, the magnetic field distributions, and the imaginary parts of the effective permeability and permittivity. It offers an effective way to produce low-loss and high transmission metamaterial EIT.