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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 6 — Mar. 14, 2011
  • pp: 5303–5312

Excitation of a one-dimensional evanescent wave by conical edge diffraction of surface plasmon

Johann Berthelot, Alexandre Bouhelier, Gérard Colas des Francs, Jean-Claude Weeber, and Alain Dereux  »View Author Affiliations

Optics Express, Vol. 19, Issue 6, pp. 5303-5312 (2011)

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The experimental observation of a one-dimensional evanescent wave supported by a 90° metal edge is reported. Through a measurement of in-plane momenta, we clearly demonstrate the dimensional character of this surface wave and show that it is non-radiative in the superstrate. Excitation conditions, lateral extension and polarization properties of this wave are discussed. Finally, we explore the effect of the surrounding dielectric medium and demonstrate that a single edge can sustain distinct excitations.

© 2011 Optical Society of America

OCIS Codes
(240.0240) Optics at surfaces : Optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons
(260.6970) Physical optics : Total internal reflection
(240.3695) Optics at surfaces : Linear and nonlinear light scattering from surfaces

ToC Category:
Optics at Surfaces

Original Manuscript: January 4, 2011
Revised Manuscript: February 18, 2011
Manuscript Accepted: February 21, 2011
Published: March 7, 2011

Johann Berthelot, Alexandre Bouhelier, Gérard Colas des Francs, Jean-Claude Weeber, and Alain Dereux, "Excitation of a one-dimensional evanescent wave by conical edge diffraction of surface plasmon," Opt. Express 19, 5303-5312 (2011)

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