Tuesday, May 26, 2015

Abstract-Magnetic-coupling induced transparency in a planar terahertz metamaterial



Ming Li Wan
  • Corresponding author.
  • Electric and Information Engineering College, Pingdingshan University, Pingdingshan, Henan Province 467000, P. R. China
  • Shu Qing Yuan
  • Electric and Information Engineering College, Pingdingshan University, Pingdingshan, Henan Province 467000, P. R. China
  • Yue Li Song
  • Electric and Information Engineering College, Pingdingshan University, Pingdingshan, Henan Province 467000, P. R. China
  • New Pv-energy Engineering Research Center, Pingdingshan University, Pingdingshan, Henan Province 467000, P. R. China
  • Yong Li
  • Electric and Information Engineering College, Pingdingshan University, Pingdingshan, Henan Province 467000, P. R. China
  • Mingli Tian
  • Electric and Information Engineering College, Pingdingshan University, Pingdingshan, Henan Province 467000, P. R. China
  • Feng Qun Zhou
  • Electric and Information Engineering College, Pingdingshan University, Pingdingshan, Henan Province 467000, P. R. China



  •  http://www.worldscientific.com/doi/abs/10.1142/S0217979215501143?src=recsys&


    In this paper, we demonstrate that an electromagnetically induced transparency (EIT)-like behavior is induced by the coupling of two magnetic resonances in a planar terahertz (THz) metamaterial structure, which consists of a U-shaped split ring (USR) as one bright resonator and a cut wire pair (CWP) as one dark resonator. It is found that the EIT-like spectral response is insensitive to the lateral distance between the two magnetic resonators, whereas an on-to-off modulation of the amplitude of the transparency window can be achieved by moving the USR vertically along the CWP. The underlying physical mechanism is mainly attributed to magneto-inductive excitation of the CWP. This investigation may provide an insight of the role of magnetic coupling in achieving EIT-like effect, inspiring interest in the developments of magnetically tunable transparency metamaterial for a wide range of optical devices with switching and modulation capabilities.

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