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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 16 — Aug. 7, 2006
  • pp: 7378–7397

Theory of unconventional Smith-Purcell radiation in finite-size photonic crystals

Tetsuyuki Ochiai and Kazuo Ohtaka  »View Author Affiliations

Optics Express, Vol. 14, Issue 16, pp. 7378-7397 (2006)

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Unusual emission of light, called the unconventional Smith-Purcell radiation (uSPR) in this paper, was demonstrated from an electron traveling near a finite photonic crystal (PhC) at an ultra-relativistic velocity. This phenomenon is not related to the accepted mechanism of the conventional SPR and arises because the evanescent light from the electron has such a small decay constant in the ultra-relativistic regime that it works practically as a plane-wave probe entering the PhC from one end. We analyze the dependence of the SPR spectrum on the velocity of electron and on the parity of excited photonic bands and show, for PhCs made up of a finite number of cylinders, that uSPR probes the photonic band structure very faithfully.

© 2006 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(230.3990) Optical devices : Micro-optical devices
(290.4210) Scattering : Multiple scattering

ToC Category:
Photonic Crystals

Original Manuscript: June 9, 2006
Revised Manuscript: July 28, 2006
Manuscript Accepted: July 28, 2006
Published: August 7, 2006

Tetsuyuki Ochiai and Kazuo Ohtaka, "Theory of unconventional Smith-Purcell radiation in finite-size photonic crystals," Opt. Express 14, 7378-7397 (2006)

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