• 文献标题:   Tunable manipulation of electromagnetically induced transparency in resonance amplitude based on metal-graphene complementary metamaterial
  • 文献类型:   Article
  • 作  者:   SHU C, MEI JS
  • 作者关键词:   terahertz, graphene, metamaterial, eit, manipulation of amplitude
  • 出版物名称:   OPTICS COMMUNICATIONS
  • ISSN:   0030-4018 EI 1873-0310
  • 通讯作者地址:   Harbin Univ Sci Technol
  • 被引频次:   0
  • DOI:   10.1016/j.optcom.2019.124966
  • 出版年:   2020

▎ 摘  要

An electromagnetically induced transparency (EIT) analogue consisting of two metal-based cut wires resonators, which are embedded under the sheet of graphene to actively modulate resonance amplitude, is proposed and simulated in terahertz frequencies. To eliminate influence of uneven cut wires surface on graphene's characteristics, a sheet of graphene is transferred on the thin intervening Si layer. EIT-like phenomenon is enabled through coupling between the resonators of bright and dark mode. Moreover, resonance amplitude of transparency peak can be dynamically manipulated by Fermi level of graphene. Theoretical analysis of classical two-particle model indicate that damping rate of resonators is active tuning, which reveals the physical mechanism underlying tunable characteristic of analogue. Therefore, the work will provide a promising application in construction of slow light and terahertz modulation devices.