中国物理B ›› 2012, Vol. 21 ›› Issue (11): 117303-117303.doi: 10.1088/1674-1056/21/11/117303

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

On the surface plasmon wave propagation along single metal wire

钟任斌, 刘维浩, 周俊, 刘盛纲   

  1. Terahertz Science and Technology Research Centre, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2012-02-23 修回日期:2012-05-02 出版日期:2012-10-01 发布日期:2012-10-01
  • 基金资助:
    Project supported by the Specialized Research Fund for Doctoral Program of Higher Education of China (Grant No. 20100185110022), the National Basic Research Program of China (Grant No. 2007CB310401), and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. ZYGX2011J037).

On the surface plasmon wave propagation along single metal wire

Zhong Ren-Bin (钟任斌), Liu Wei-Hao (刘维浩), Zhou Jun (周俊), Liu Sheng-Gang (刘盛纲 )   

  1. Terahertz Science and Technology Research Centre, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2012-02-23 Revised:2012-05-02 Online:2012-10-01 Published:2012-10-01
  • Contact: Liu Sheng-Gang E-mail:liusg@uestc.edu.cn
  • Supported by:
    Project supported by the Specialized Research Fund for Doctoral Program of Higher Education of China (Grant No. 20100185110022), the National Basic Research Program of China (Grant No. 2007CB310401), and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. ZYGX2011J037).

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摘要： Recently, the single metal wire (SW) becomes attractive for its potential applications in terahertz and higher frequency range. However, as the most simple and typical surface plasmon polariton (SPP) transmission line, its study seems far from enough. Many important transmission behaviours have not been explained satisfactorily from the viewpoint of physics. In this paper, making use of the modified Drude model (MDM) based on the Sommerfeld theory, the transmission behaviours of SPPs along SW are systemically investigated theoretically. Some important physical phenomena such as the mode transformation, the lifetime of radiative mode and the resonance frequency are revealed, and their mechanisms are explored. The results obtained in the paper will facilitate the general understanding of the features and the physical essence of the SPP transmission, not only for SW itself but also for other SPP transmission lines.

关键词: surface plasmon, single metal wire, wave propagation

Abstract: Recently, the single metal wire (SW) becomes attractive for its potential applications in terahertz and higher frequency range. However, as the most simple and typical surface plasmon polariton (SPP) transmission line, its study seems far from enough. Many important transmission behaviours have not been explained satisfactorily from the viewpoint of physics. In this paper, making use of the modified Drude model (MDM) based on the Sommerfeld theory, the transmission behaviours of SPPs along SW are systemically investigated theoretically. Some important physical phenomena such as the mode transformation, the lifetime of radiative mode and the resonance frequency are revealed, and their mechanisms are explored. The results obtained in the paper will facilitate the general understanding of the features and the physical essence of the SPP transmission, not only for SW itself but also for other SPP transmission lines.

Key words: surface plasmon, single metal wire, wave propagation

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

  • 73.20.Mf
84.40.Az (Waveguides, transmission lines, striplines) 71.36.+c (Polaritons (including photon-phonon and photon-magnon interactions))