Terahertz radiation from interaction between an electron beam and a planar surface plasmon structure |
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| Authors: | Hu Min Zhang Ya-Xin Yan Yang Zhong Ren-Bin and Liu Sheng-Gang |
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| Affiliation: | Terahertz Research Centre, School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China |
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| 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. |
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| Keywords: | surface plasmon electron beam |
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