title: Sensing with multipolar second harmonic generation from spherical metallic nanoparticles.
abstract: We show that sensing in the nonlinear optical regime using multipolar surface plasmon resonances is more sensitive in comparison to sensing in the linear optical regime. Mie theory, and its extension to the second harmonic generation from a metallic nanosphere, is used to describe multipolar second harmonic generation from silver metallic nanoparticles. The standard figure of merit of a potential plasmonic sensor based on this principle is then calculated. We finally demonstrate that such a sensor is more sensitive to optical refraction index changes occurring in the vicinity of the metallic nanoparticle than its linear counterpart.
authors.affiliation: Laboratoire de Spectrométrie Ionique et Moléculaire (LASIM), UMR CNRS 5579, Université Claude Bernard Lyon 1, 43 Boulevard du 11 novembre 1918, 69622 Villeurbanne Cedex, France.
authors.forename: Jérémy
authors.initials: J
authors.lastname: Butet
authors.forename: Isabelle
authors.initials: I
authors.lastname: Russier-Antoine
authors.forename: Christian
authors.initials: C
authors.lastname: Jonin
authors.forename: Noëlle
authors.initials: N
authors.lastname: Lascoux
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Benichou
authors.forename: Pierre-François
authors.initials: PF
authors.lastname: Brevet
mesh_terms: D003198:Computer Simulation; D008027:Light; D008670:Metals / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D054118:Nanospheres / Q000737:chemistry* / Q000648:ultrastructure*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D008670:Metals