30 citations · 86 across the 7 of their papers we have counts for
7 papers
Optical-vortex diagnostics via Fraunhofer slit diffraction with controllable wavefront curvature
A. Bekshaev, L. Mikhaylovskaya, S. Patil +2
Far-field slit-diffraction of circular optical-vortex (OV) beams is efficient for measurement of the topological charge (TC) magnitude but does not reveal its sign. We show that th…
Transformation of the singular skeleton in optical-vortex beams diffracted by a rectilinear phase step
Aleksandr Bekshaev, Anna Khoroshun, Lidiya Mikhaylovskaya
Based on the Kirchhoff-Fresnel approximation, we numerically analyze spatial characteristics of the light field formed after a circular Laguerre-Gaussian beam with a single-charged…
Electromagnetic dynamical characteristics of a surface plasmon-polariton
Aleksandr Bekshaev, Lidiya Mikhaylovskaya
We consider the electromagnetic field near an interface between two media with arbitrary real frequency-dependent permittivities and permeabilities, under conditions supporting the…
Singular skeleton evolution and topological reactions in edge-diffracted circular optical-vortex beams
Aleksandr Bekshaev, Aleksey Chernykh, Anna Khoroshun +1
Edge diffraction of a circular optical vortex (OV) beam transforms its singular structure: a multicharged axial OV splits into the set of single-charged ones that form the 'singula…
Displacements and evolution of optical vortices in edge-diffracted Laguerre-Gaussian beams
Aleksandr Bekshaev, Aleksey Chernykh, Anna Khoroshun +1
Based on the Kirchhoff-Fresnel approximation, we consider behavior of the optical vortices (OV) upon propagation of the diffracted Laguerre-Gaussian (LG) beams with topological cha…
Evolution of the phase singularities in edge-diffracted optical-vortex beams
Aleksandr Bekshaev, Lidiya Mikhaylovskaya, Aleksey Chernykh +1
We study, both theoretically and by experiment, migration of the amplitude zeros within a fixed cross section of the edge-diffracted optical-vortex beam, when the screen edge perfo…
Localization and migration of phase singularities in the edge-diffracted optical-vortex beams
Aleksandr Bekshaev, Aleksey Chernykh, Anna Khoroshun +1
When a circularly-symmetric light beam with optical vortex (OV) diffracts at an opaque screen with the sharp edge, the OV core is displaced from the beam axis and, in case of the m…