Enhanced spin-orbit optical mirages from dual nanospheres
arXiv:1807.04994 · doi:10.1103/PhysRevA.99.013852
Abstract
Spin-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.
arXiv comment5 pages, 4 figures
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Cited by in corpus (9)
- Kerker Conditions Upon Lossless, Absorption, and Optical Gain Regimes
- Spin angular momentum in planar and cylindrical waveguides induced by transverse confinement and intrinsic helicity of guided light
- Intrinsic multipolar contents of nanoresonators for tailored scattering
- Scattering asymmetry and second Kerker condition
- Asymmetry and spin-orbit coupling of light scattered from subwavelength particles
- Unveiling dipolar spectral regimes of large dielectric Mie spheres from helicity conservation
- Momentum-space geometric structure of helical evanescent waves and its implications on near-field directionality
- Sectoral Multipole Focused Beams
- Role of the absorption on the spin-orbit interactions of light with Si nano-particles