title: Long-distance indirect excitation of nanoplasmonic resonances.
abstract: In nanoscopic systems, size, geometry, and arrangement are the crucial determinants of the light-matter interaction and resulting nanoparticles excitation. At optical frequencies, one of the most prominent examples is the excitation of localized surface plasmon polaritons, where the electromagnetic radiation is coupled to the confined charge density oscillations. Here, we show that beyond direct near- and far-field excitation, a long-range, indirect mode of particle excitation is available in nanoplasmonic systems. In particular, in amorphous arrays of plasmonic nanodiscs we find strong collective and coherent influence on each particle from its entire active neighborhood. This dependency of the local field response on excitation conditions at distant areas brings exciting possibilities to engineer enhanced electromagnetic fields through controlled, spatially configured illumination.
authors.affiliation: Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany. w.khunsin@fkf.mpg.de
authors.forename: Worawut
authors.initials: W
authors.lastname: Khunsin
authors.forename: Björn
authors.initials: B
authors.lastname: Brian
authors.forename: Jens
authors.initials: J
authors.lastname: Dorfmüller
authors.forename: Moritz
authors.initials: M
authors.lastname: Esslinger
authors.forename: Ralf
authors.initials: R
authors.lastname: Vogelgesang
authors.forename: Christoph
authors.initials: C
authors.lastname: Etrich
authors.forename: Carsten
authors.initials: C
authors.lastname: Rockstuhl
authors.forename: Alexandre
authors.initials: A
authors.lastname: Dmitriev
authors.forename: Klaus
authors.initials: K
authors.lastname: Kern
mesh_terms: D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology; D010316:Particle Size; D013499:Surface Properties