• 文献标题:   Deep Electrical Modulation of Terahertz Wave Based on Hybrid Metamaterial-Dielectric-Graphene Structure
  • 文献类型:   Article
  • 作  者:   XIA LP, ZHANG X, ZHANG M, DANG SH, HUANG SJ, TAN Y, YAN WJ, CUI HL
  • 作者关键词:   terahertz, modulation, graphene, metamaterial
  • 出版物名称:   APPLIED SCIENCESBASEL
  • ISSN:   2076-3417
  • 通讯作者地址:   Yangtze Normal Univ
  • 被引频次:   2
  • DOI:   10.3390/app9030507
  • 出版年:   2019

▎ 摘  要

A terahertz modulation structure based on hybrid metamaterial and graphene is proposed and demonstrated in this work. The metamaterial with a square slit ring array excites terahertz resonance in the slits and enhances the interaction between the terahertz wave and graphene. The graphene layer acting as the active material is tuned by the applied electrical field. With the separation by a dielectric layer between the graphene and the metallic structure, the resonant frequency and transmitted energy are both modulated by the graphene. Experimental result indicates that the modulation depth of the terahertz transmitted amplitude is 65.1% when the applied modulation voltage is tuned 5 V.