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Enhanced spin-orbit optical mirages from dual nanospheres

AuthorsOlmos-Trigo, Jorge; Sanz-Fernández; Cristina; García-Etxarri, Aitzol ; Molina-Terriza, Gabriel; Bergeret, F. S. ; Sáenz, J. J.
Issue Date2018
CitationCEN 2018
AbstractSpin-orbit interaction of light can lead to the so-called optical mirages, i.e. a perceived displacement in the position of a particle due to the spiraling structure of the scattered light. In electric dipoles, the maximum displacement is subwavelength and does not depend on the optical properties of the scatterer. Here we will show that the optical mirage in high refractive index dielectric nanoparticles depends strongly on the ratio between electric and magnetic dipolar responses. When the dual symmetry is satisfied (at the first Kerker condition), there is a considerable enhancement (far above the wavelength) of the spin-orbit optical mirage which can be related to the emergence of an optical vortex in the backscattering direction.
DescriptionResumen del trabajo presentado a la Spanish Conference on Nanophotonics (Conferencia Española de Nanofotónica-CEN), celebrada en Donostia-San Sebastián (España) del 3 al 5 de octubre de 2018.
Appears in Collections:(CFM) Comunicaciones congresos
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