中国物理B ›› 2016, Vol. 25 ›› Issue (4): 47301-047301.doi: 10.1088/1674-1056/25/4/047301

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Design of terahertz beam splitter based on surface plasmon resonance transition

Xiang Liu(刘项), Dong-Xiao Yang(杨冬晓)   

  1. 1 College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China;
    2 Research Center for Terahertz Technology, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2015-07-22 修回日期:2015-12-25 出版日期:2016-04-05 发布日期:2016-04-05
  • 通讯作者: Dong-Xiao Yang E-mail:yangdx@zju.edu.cn

Design of terahertz beam splitter based on surface plasmon resonance transition

Xiang Liu(刘项)1,2, Dong-Xiao Yang(杨冬晓)1,2   

  1. 1 College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China;
    2 Research Center for Terahertz Technology, Zhejiang University, Hangzhou 310027, China
  • Received:2015-07-22 Revised:2015-12-25 Online:2016-04-05 Published:2016-04-05
  • Contact: Dong-Xiao Yang E-mail:yangdx@zju.edu.cn

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摘要： According to the resonance transition between propagating surface plasmon and localized surface plasmon, we demonstrate a design of beam splitter that can split terahertz wave beams in a relatively broad frequency range. The transmission properties of the beam splitter are analyzed utilizing the finite element method. The resonance transition between two kinds of plasmons can be explained by a model of coherent electron cloud displacement.

关键词: terahertz, surface plasmon, splitter, resonance transition

Abstract: According to the resonance transition between propagating surface plasmon and localized surface plasmon, we demonstrate a design of beam splitter that can split terahertz wave beams in a relatively broad frequency range. The transmission properties of the beam splitter are analyzed utilizing the finite element method. The resonance transition between two kinds of plasmons can be explained by a model of coherent electron cloud displacement.

Key words: terahertz, surface plasmon, splitter, resonance transition

中图分类号:  (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

  • 73.20.Mf
52.65.-y (Plasma simulation) 91.30.Fn (Surface waves and free oscillations)