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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 24 — Nov. 26, 2007
  • pp: 16222–16229

Analysis of Smith-Purcell radiation in optical region

Simpei Taga, Koji Inafune, and Eiichi Sano  »View Author Affiliations


Optics Express, Vol. 15, Issue 24, pp. 16222-16229 (2007)
http://dx.doi.org/10.1364/OE.15.016222


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Abstract

Smith-Purcell radiation (SPR), emitted when an electron beam is traveling above a metallic grating, has attracted a lot of attention as a source of electromagnetic (EM) radiation in the millimeter to visible spectrum. We conducted a theoretical investigation of SPR in the optical region using a two-dimensional finite-difference time-domain (FDTD) method. The permittivity of metal was represented using the Drude model. During the simulation, we observed three types of EM radiations when an electron bunch passes above a metal grating. We think these three types of EM radiation were basic SPR, original surface plasmon polariton (SPP), and mimic-SPP, caused by the periodic grating structure. Our observations were in accordance with analytical models of original SPP and mimic-SPP EM radiation.

© 2007 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(230.6080) Optical devices : Sources
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

History
Original Manuscript: October 15, 2007
Revised Manuscript: November 20, 2007
Manuscript Accepted: November 20, 2007
Published: November 21, 2007

Citation
Simpei Taga, Koji Inafune, and Eiichi Sano, "Analysis of Smith-Purcell radiation in optical region," Opt. Express 15, 16222-16229 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-24-16222


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References

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