Open AccessNested plasmonic resonances: extraordinary enhancement of linear and nonlinear interactions
Author(s) -
Domenico de Ceglia,
Maria Antonietta Vincenti,
Neşet Aközbek,
Mark J. Bloemer,
Michael Scalora
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.003980
Subject(s) - plasmon , electric field , resonator , optics , surface plasmon , nonlinear system , dielectric , coupling (piping) , nonlinear optics , materials science , plasmonic nanoparticles , optoelectronics , physics , laser , quantum mechanics , metallurgy
Plasmonic resonators can provide large local electric fields when the gap between metal components is filled with an ordinary dielectric. We consider a new concept consisting of a hybrid nanoantenna obtained by introducing a resonant, plasmonic nanoparticle strategically placed inside the gap of an aptly sized metallic antenna. The system exhibits two nested, nearly overlapping plasmonic resonances whose signature is a large field enhancement at the surface and within the bulk of the plasmonic nanoparticle that leads to unusually strong, linear and nonlinear light-matter coupling.