Chiral coding metasurfaces with integrated vanadium dioxide for thermo-optic modulation of terahertz waves
作者: Fuyu LiTingting TangJie LiLi LuoChaoyang LiJian ShenJianquan Yao
作者单位: 1Information Materials and Device Applications Key Laboratory of Sichuan Provincial Universities, Chengdu University of Information Technology, Chengdu, 610225, China
2State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, No. 58, Renmin Avenue, Haikou, Hainan Province, 570228, China
3Key Laboratory of Optoelectronics Information Technology (Tianjin University), Ministry of Education, Institute of Laser & Opto-electronics, School of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin, 300072, China
4Dongguan ROE Technology Co.,Ltd, China
刊名: Journal of Alloys and Compounds, 2020, Vol.826
来源数据库: Elsevier Journal
DOI: 10.1016/j.jallcom.2020.154174
关键词: Chiral coding metasurfaceVanadium dioxideThermo-optic effectPancharatnam-Berry (P–B) phase
英文摘要: Abstract(#br)ld of electromagnetics, there are many limitations to achieve simultaneous polarization conversion and wavefront control. The chiral coding metasurface based on the Pancharatnam-Berry (P–B) phase effectively helps to alleviate these restrictions and shows strong control over the terahertz radiation field. In this paper, the principle of chirality is theoretically analyzed and verified by simulation results. The circular dichroism ΔR (chiral effect) achieves 0.8. By combining the chirality and thermo-optic effect of vanadium dioxide (VO 2 ), we propose three switchable metasurfaces for quantitative splitting and high-efficiency focusing (low-efficiency divergence) of terahertz beams. The amplitude switching efficiency of the circularly polarized (CP) and linearly polarized...
全文获取路径: Elsevier  (合作)
影响因子:2.39 (2012)

  • coding 编码
  • modulation 
  • integrated 综[组,复]合
  • dioxide 二氧化物
  • vanadium 
  • thermo 表示热
  • optic 光学