title: Enhancement of optical processes in coupled plasmonic nanocavities [Invited].
abstract: We present detailed experimental and numerical investigations of resonances in deep nanogroove gratings in metallic substrates. These plasmonic nanocavity gratings feature enhanced fields within the grooves that enable a large enhancement of linear and nonlinear optical processes. This enhancement relies on both localized and propagating surface plasmons on the nanopatterned surface. We show that the efficiency of optical processes such as Raman scattering and four-wave mixing is dramatically enhanced by plasmonic nanocavity gratings.
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: Patrice
authors.initials: P
authors.lastname: Genevet
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Tetienne
authors.forename: Romain
authors.initials: R
authors.lastname: Blanchard
authors.forename: Mikhail A
authors.initials: MA
authors.lastname: Kats
authors.forename: J P Balthasar
authors.initials: JP
authors.lastname: Müller
authors.forename: Marlan O
authors.initials: MO
authors.lastname: Scully
authors.forename: Federico
authors.initials: F
authors.lastname: Capasso