Open AccessThree-dimensional structure of polarization singularities of a light field near a dielectric spherical nanoparticle
Author(s) -
N. Yu. Kuznetsov,
K. S. Grigoriev,
Yu. V. Vladimirova,
Vladimir Makarov
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.398602
Subject(s) - elliptical polarization , optics , polarization (electrochemistry) , physics , dielectric , ellipse , circular polarization , isotropy , monochromatic color , wavelength , linear polarization , laser , optoelectronics , chemistry , astronomy , microstrip
We numerically study the structure of polarization singularity lines in a near-field of the sub-wavelength dielectric particle when it is irradiated by a monochromatic elliptically polarized plane wave. For the various values of the ellipticity degree of the incident radiation, we trace the C T and L T -lines on which the polarization ellipse turns into a circle or a line, respectively. The continuous variation of the isotropy parameters of the singularities is visualized along the lines. The main rules of C T and L T -lines deformation, emergence, and vanishing are revealed.