title: Integration of gold nanoparticles in optical resonators.
abstract: The optical absorption of one-dimensional photonic crystal based resonators containing different types of gold nanoparticles is controllably modified by means of the interplay between planar optical cavity modes and localized surface plasmons. Spin-casting of metal oxide nanoparticle suspensions was used to build multilayered photonic structures that host (silica-coated) gold nanorods and spheres. Strong reinforcement and depletion of the absorptance was observed at designed wavelength ranges, thus proving that our method provides a reliable means to modify the optical absorption originated at plasmonic resonances of particles of arbitrary shape and within a wide range of sizes. These observations are discussed on the basis of calculations of the spatial and spectral dependence of the optical field intensity within the multilayers.
authors.affiliation: Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla, C/América Vespucio 49, 41092 Sevilla, Spain.
authors.forename: Alberto
authors.initials: A
authors.lastname: Jiménez-Solano
authors.forename: Carmen
authors.initials: C
authors.lastname: López-López
authors.forename: Olalla
authors.initials: O
authors.lastname: Sánchez-Sobrado
authors.forename: José Miguel
authors.initials: JM
authors.lastname: Luque
authors.forename: Mauricio E
authors.initials: ME
authors.lastname: Calvo
authors.forename: Cristina
authors.initials: C
authors.lastname: Fernández-López
authors.forename: Ana
authors.initials: A
authors.lastname: Sánchez-Iglesias
authors.forename: Luis M
authors.initials: LM
authors.lastname: Liz-Marzán
authors.forename: Hernán
authors.initials: H
authors.lastname: Míguez