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Regular version of the site

Article

Three-dimensional structure of polarization singularities of a light field near a dielectric spherical nanoparticle

Optics Express. 2020. Т. 28. № 19. С. 27293-27299.
Kuznetsov N. Y., Grigoriev K. S., Vladimirova Yu V., Makarov V. A.

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 CT and LT-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 CT and LT-lines deformation, emergence, and vanishing are revealed.