Surface plasmon interference excited by tightly focused laser beams.

Bouhelier, A; Ignatovich, F; Bruyant, A; Huang, C; Colas des Francs, G; Weeber, J-C; Dereux, A; Wiederrecht, G P; Novotny, L

Bouhelier, A; Ignatovich, F; Bruyant, A; Huang, C; Colas des Francs, G; Weeber, J-C; Dereux, A; Wiederrecht, G P; Novotny, L.

Afiliación

Bouhelier A; Institut Carnot de Bourgogne, CNRS-UMR 5209, Université de Bourgogne, 21078 Dijon, France. alexandre.bouhelier@u-bourgogne.fr

Opt Lett ; 32(17): 2535-7, 2007 Sep 01.

Article en En | MEDLINE | ID: mdl-17767296

RESUMEN

We show that interfering surface plasmon polaritons can be excited with a focused laser beam at normal incidence to a plane metal film. No protrusions or holes are needed in this excitation scheme. Depending on the axial position of the focus, the intensity distribution on the metal surface is either dominated by interferences between counterpropagating plasmons or by a two-lobe pattern characteristic of localized surface plasmon excitation. Our experiments can be accurately explained by use of the angular spectrum representation and provide a simple means for locally exciting standing surface plasmon polaritons.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Opt Lett Año: 2007 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Estados Unidos

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