中国物理B ›› 2009, Vol. 18 ›› Issue (9): 3877-3882.doi: 10.1088/1674-1056/18/9/043

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Terahertz radiation from interaction between an electron beam and a planar surface plasmon structure

胡旻, 张雅鑫, 鄢扬, 钟任斌, 刘盛纲   

  1. Terahertz Research Centre, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2008-12-07 修回日期:2009-01-08 出版日期:2009-09-20 发布日期:2009-09-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10676110) and the National Fundamental Research Program of China (Grant No 2007CB310401).

Terahertz radiation from interaction between an electron beam and a planar surface plasmon structure

Hu Min(胡旻)†, Zhang Ya-Xin(张雅鑫), Yan Yang(鄢扬), Zhong Ren-Bin(钟任斌), and Liu Sheng-Gang(刘盛纲)   

  1. Terahertz Research Centre, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2008-12-07 Revised:2009-01-08 Online:2009-09-20 Published:2009-09-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10676110) and the National Fundamental Research Program of China (Grant No 2007CB310401).

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摘要： The possibility of an electron beam exciting surface plasmons in conducting metal is discussed in this paper. A planar perfect-structure with subwavelength holes is proposed. The phenomenon that mimicking surface plasmon waves can be excited and amplified by an electron beam is proved theoretically and numerically. The mechanism of transmission through a subwavelength hole array is exploited to enhance the interaction between the electron beam and the mimicking surface plasmons.

Abstract: The possibility of an electron beam exciting surface plasmons in conducting metal is discussed in this paper. A planar perfect-structure with subwavelength holes is proposed. The phenomenon that mimicking surface plasmon waves can be excited and amplified by an electron beam is proved theoretically and numerically. The mechanism of transmission through a subwavelength hole array is exploited to enhance the interaction between the electron beam and the mimicking surface plasmons.

Key words: surface plasmon, electron beam

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

  • 73.20.Mf
78.70.-g (Interactions of particles and radiation with matter)