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Chin. Phys. B, 2009, Vol. 18(9): 03877    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

Hu Min, Zhang Ya-Xin, Yan Yang, Zhong Ren-Bin, Liu Sheng-Gang
Terahertz Research Centre, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
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.
Keywords:  electron beam      surface plasmon     
Received:  07 December 2008      Published:  20 September 2009
PACS:  73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))  
  78.70.-g (Interactions of particles and radiation with matter)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10676110) and the National Fundamental Research Program of China (Grant No 2007CB310401).

Cite this article: 

Hu Min, Zhang Ya-Xin, Yan Yang, Zhong Ren-Bin, Liu Sheng-Gang Terahertz radiation from interaction between an electron beam and a planar surface plasmon structure 2009 Chin. Phys. B 18 03877

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