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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 18 — Sep. 3, 2007
  • pp: 11427–11432

Unidirectional excitation of surface plasmons by slanted gratings

Nicolas Bonod, Evgeny Popov, Lifeng Li, and Boris Chernov  »View Author Affiliations

Optics Express, Vol. 15, Issue 18, pp. 11427-11432 (2007)

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Surface plasmon excitation by normally incident light on surface-relief metallic diffraction gratings is studied numerically. Predominantly unidirectional excitation is achieved with a grating of either a slanted lamellar or an inclined sinusoidal groove profile, both having shallow depths. Maps of Poynting vector illustrate that the energy flow turns from normal incidence in the far-field region to a pattern almost parallel to the grating surface in the required direction of excitation of a single SPP wave.

© 2007 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

Original Manuscript: July 23, 2007
Revised Manuscript: August 21, 2007
Manuscript Accepted: August 21, 2007
Published: August 24, 2007

Nicolas Bonod, Evgeny Popov, Lifeng Li, and Boris Chernov, "Unidirectional excitation of surface plasmons by slanted gratings," Opt. Express 15, 11427-11432 (2007)

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