title: Electromagnetic coupling between a metal nanoparticle grating and a metallic surface.
abstract: The electromagnetic coupling between a two-dimensional grating of resonant gold nanoparticles and a gold metallic film is investigated. We report on the observation of multipeaks in the extinction spectra attributed to resonant modes of the hybrid system, resulting from the coupling between the localized plasmon of the nanoparticles with the underlying surface plasmon mode. Simulations based on the Fourier modal method give good agreement with the experimental measurements and allow for the identification of the respective contributions.
authors.affiliation: ICFO-Institut de Ciències Fotòniques, Mediterranean Technology Park, 08860 Castelldefels, Barcelona, Spain.
authors.forename: Jean
authors.initials: J
authors.lastname: Cesario
authors.forename: Romain
authors.initials: R
authors.lastname: Quidant
authors.forename: Gonçal
authors.initials: G
authors.lastname: Badenes
authors.forename: Stefan
authors.initials: S
authors.lastname: Enoch