Evolution of the Stokes parameters, polarization singularities, and optical skyrmion
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DOI: 10.1103/physreva.103.023514
Abstract: A physical theory is presented for polarized light from an aspect of polarization singularity. This is carried out by analyzing the evolution equation of the Stokes parameters that is derived from the nonlinear Schr\"odinger type… read more here.
Keywords: stokes parameters; polarization; evolution; optical skyrmion ... See more keywords
Polarization singularities in light scattering by small particles
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review A"
DOI: 10.1103/physreva.103.023520
Abstract: Using full-wave numerical simulations and analytical multipole expansions, we investigated the properties of real-space polarization singularities that emerge in light scattering by subwavelength particles. We considered spherical and torus particles under the excitation of a… read more here.
Keywords: far field; field; near field; light scattering ... See more keywords
Optical force and torque on small particlesinduced by polarization singularities
Sign Up to like & getrecommendations! Published in 2022 at "Optics Express"
DOI: 10.1364/oe.458060
Abstract: Optical forces in the near fields have important applications in on-chip optical manipulations of small particles and molecules. Here, we report a study of optical force and torque on small particles induced by the optical… read more here.
Keywords: torque small; polarization singularities; force torque; force ... See more keywords
Magnetic modulation of topological polarization singularities in momentum space.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.458285
Abstract: The polarization singularities in momentum space, rather than in real space, are capturing interest for active singular optics with exotic light scattering and various topological phenomena, which have potential applications in vortex nano-lasers, valley exciton… read more here.
Keywords: momentum space; singularities momentum; space; optics ... See more keywords
Fresnel and Fraunhofer diffraction of a Gaussian beam with several polarization singularities
Sign Up to like & getrecommendations! Published in 2018 at "Computer Optics"
DOI: 10.18287/2412-6179-2018-42-2-179-189
Abstract: Alongside phase singularities (optical vortices), there may be light fields with polarization singularities (PS), i.e. isolated intensity nulls with radial, azimuthal, or radial-azimuthal polarization around them. Here, we study Gaussian beams with several arbitrarily located… read more here.
Keywords: diffraction gaussian; fresnel fraunhofer; polarization; fraunhofer diffraction ... See more keywords
Spin angular momentum density in the tight focus of a light field with phase and polarization singularities
Sign Up to like & getrecommendations! Published in 2019 at "Computer Optics"
DOI: 10.18287/2412-6179-2019-43-6-1098-1102
Abstract: For a light field with both phase and polarization singularities at its center, expressions are obtained that describe the distribution of the spin angular momentum (SAM) density in the sharp focal spot of an aplanatic… read more here.
Keywords: spin angular; phase polarization; angular momentum; field phase ... See more keywords