title: Excitation of a one-dimensional evanescent wave by conical edge diffraction of surface plasmon.
abstract: 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.
authors: Laboratoire Interdisciplinaire Carnot de Bourgogne, CNRS-UMR 5209, Université de Bourgogne, 21078 Dijon, France.
authors: Johann
authors: J
authors: Berthelot
authors: Alexandre
authors: A
authors: Bouhelier
authors: Gérard Colas
authors: GC
authors: des Francs
authors: Jean-Claude
authors: JC
authors: Weeber
authors: Alain
authors: A
authors: Dereux