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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.

Other conference communications or articles related to authors from the University of Cantabria

 Congress: SPIE OPTO. Photonic and Phononic Properties of Engineered Nanostructures (6º : 2016 : San Francisco)

 Publisher: SPIE Society of Photo-Optical Instrumentation Engineers

 Publication date: 01/03/2016

 No. of pages: 8

 Publication type: Conference object

 DOI: 10.1117/12.2229490

 ISSN: 0277-786X,1996-756X

 Spanish project: FIS2013-45854-P

 Publication Url: