• 文献标题:   Near-Infrared Reflection Modulation Through Electrical Tuning of Hybrid Graphene Metasurfaces
  • 文献类型:   Article
  • 作  者:   CAI ZQ, LIU YM
  • 作者关键词:   graphene, metasurface, modulation, nearinfrared
  • 出版物名称:   ADVANCED OPTICAL MATERIALS
  • ISSN:   2195-1071
  • 通讯作者地址:  
  • 被引频次:   11
  • DOI:   10.1002/adom.202102135 EA JAN 2022
  • 出版年:   2022

▎ 摘  要

Graphene, a 2D material with tunable optical properties, has recently attracted intense interest for reconfigurable metasurfaces. So far, the working wavelength of graphene-based or hybrid graphene metasurfaces has been limited in the mid-infrared and terahertz spectra. In this paper, by combining graphene with Au nanostructures, the authors demonstrate a near-infrared tunable metasurface with decent modulation efficiency, weak dependence on graphene's carrier mobility, and small gate voltages, attributing to the unique interband transition of graphene. The experimental results agree well with numerical simulations. It is also shown that by properly designing the structural parameters of Au nanostructures, the hybrid graphene metasurface can be tunable in both near-infrared and mid-infrared regions.