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Spectral response of dielectric nano-antennas in the far- and near-field regimes

Abstract: Recent studies show that the spectral behaviour of localized surface plasmon resonances (LPSRs) in metallic nanoparticles su er from both a redshift and a broadening in the transition from the far- to the near-field regimes. An interpretation of this efect was given in terms of the evanescent and propagating components of the angular spectrum representation of the radiated eld. Due to the increasing interest awakened by magnetodielectric materials as a both low-loss material option for nanotechnology applications, and also for their particular scattering properties, here we study the spectral response of a magnetodielectric nanoparticle as a basic element of a dielectric nano-antenna. This study is made by analyzing the changes su ered by the scattered electromagnetic field when propagating from the surface of this dielectric nanostructure to the far-zone in terms of propagating and evanescent plane wave components of the radiated fields.

Otras comunicaciones del congreso o articulos relacionados con autores/as de la Universidad de Cantabria

 Congreso: SPIE Photonics Europe (2016 : Brussels)

Editorial: SPIE Society of Photo-Optical Instrumentation Engineers

 Año de publicación: 2016

Nº de páginas: 8

Tipo de publicación: Comunicación a Congreso

DOI: 10.1117/12.2229490

ISSN: 0277-786X,1996-756X

Proyecto español: MICINN FIS2013-45854-P

Url de la publicación: https://doi.org/10.1117/12.2229490

Autores/as

YAEL GUTIERREZ VELA

ANGELA INMACULADA BARREDA GOMEZ