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Updated: Jun 3, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Excitation of a one-dimensional evanescent wave by conical edge diffraction of surface plasmon
Johann Berthelot1, Alexandre Bouhelier, Gérard Colas des Francs
1Laboratoire Interdisciplinaire Carnot de Bourgogne, CNRS-UMR 5209, Université de Bourgogne, 21078 Dijon, France.
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.
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