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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 16 — Aug. 11, 2014
  • pp: 19252–19261

Electron beam excitation of surface plasmon polaritons

Sen Gong, Min Hu, Renbin Zhong, Xiaoxing Chen, Ping Zhang, Tao Zhao, and Shenggang Liu  »View Author Affiliations

Optics Express, Vol. 22, Issue 16, pp. 19252-19261 (2014)

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In this paper, the excitations of surface plasmon polaritons (SPPs) by both perpendicular and parallel electron beam are investigated. The results of analytical theory and numerical calculation show that the mechanisms of these two excitations are essentially different, and the behavior and properties of SPPs in metal structures strongly depend on the methods of excitation. For the perpendicular excitation, SPPs contain plenty of frequency components, propagate with attenuation and are always accompanied with the transition radiation. Whereas for parallel excitation, SPPs waves are coherent, tunable, propagating without attenuation and the transition radiation does not occur. We also show that there are two modes for the parallel excited SPPs on the metal films and they all can be excited efficiently by the parallel moving electron beam. And the operating frequency of SPPs can be tuned in a large frequency range by adjusting the beam energy.

© 2014 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(250.5403) Optoelectronics : Plasmonics

ToC Category:

Original Manuscript: April 17, 2014
Revised Manuscript: June 18, 2014
Manuscript Accepted: July 18, 2014
Published: August 1, 2014

Sen Gong, Min Hu, Renbin Zhong, Xiaoxing Chen, Ping Zhang, Tao Zhao, and Shenggang Liu, "Electron beam excitation of surface plasmon polaritons," Opt. Express 22, 19252-19261 (2014)

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