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Electromagnetic polarization-controlled perfect switching effect with high-refractive-index dimers and the beam-splitter configuration

Abstract: Sub-wavelength particles made from high-index dielectrics, either individual or as ensembles, are ideal candidates for multifunctional elements in optical devices. Their directionality effects are traditionally analysed through forward and backward measurements, even if these directions are not convenient for in-plane scattering practical purposes. Here we present unambiguous experimental evidence in the microwave range that for a dimer of HRI spherical particles, a perfect switching effect is observed out of those directions as a consequence of the mutual particle electric/magnetic interaction. The binary state depends on the excitation polarization. Its analysis is performed through the linear polarization degree of scattered radiation at a detection direction perpendicular to the incident direction: the beam-splitter configuration. The scaling property of Maxwell's equations allows the generalization of our results to other frequency ranges and dimension scales, for instance, the visible and the nanometric scale.

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 Fuente: NATURE COMMUNICATIONS 8:13910

Editorial: Nature Publishing Group

 Fecha de publicación: 01/01/2017

Nº de páginas: 8

Tipo de publicación: Artículo de Revista

 DOI: 10.1038/ncomms13910

ISSN: 2041-1723

Proyecto español: FIS2013-45854-P

Url de la publicación: https://www.nature.com/articles/ncomms13910.pdf

Autores/as

ANGELA INMACULADA BARREDA GOMEZ

SALEH, HASSAN

JEAN MICHEL GEFFRIN