Metal-graphene hybrid active chiral metasurfaces for dynamic terahertz wavefront modulation and near field imaging
作者: Jie LiJitao LiYue YangJining LiYating ZhangLiang WuZhang ZhangMaosheng YangChenglong ZhengJiahui LiJin HuangFuyu LiTingting TangHaitao DaiJianquan Yao
作者单位: 1Key Laboratory of Opto-Electronics Information Technology (Tianjin University), Ministry of Education, School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China
2Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, 300072, China
3Information Materials and Device Applications Key Laboratory of Sichuan Provincial Universities, Chengdu University of Information Technology, Chengdu, 610225, China
4School of Mechanical Engineering Jiangsu University, Zhenjiang, 225009, China
刊名: Carbon, 2020, Vol.163 , pp.34-42
来源数据库: Elsevier Journal
DOI: 10.1016/j.carbon.2020.03.019
英文摘要: Abstract(#br)Chiral metasurfaces can achieve giant chiral optical responses and have been expanded from the optical band to other electromagnetic bands. Here, we propose a new method for dynamic terahertz circular dichroism (CD) manipulation in metasurfaces. By introducing a patterned and electrically doped graphene into the metamirror consists of double layer C-shaped split ring resonators (SRRs), efficient terahertz CD modulation is observed. Since the electrical doping of graphene changes the absorption loss of the metasuface cavity, the structure shows switching between a chiral metasurface and an ordinary metal mirror, which can be seen as "on" and "off" states. The calculation results show an efficient modulation of the terahertz CD in a large dynamic range. In addition, we also use...
全文获取路径: Elsevier  (合作)
影响因子:5.868 (2012)

  • wavefront 波前
  • modulation 
  • imaging 图像形成
  • dynamic 动力学的
  • chiral 手性的
  • hybrid 杂种
  • active 活动的
  • field