COMPARISON OF THE ACCURACY OF DETERMINATION OF OPTICAL VORTEX COORDINATES BY DIFFERENT METHODS
F. Yu. Kanev1, V. P. Aksenov1, N. A. Makenova1,2, I. D. Veretekhin1,3
1Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia
2National Research Tomsk Polytechnic University, Tomsk, Russia
3National Research Tomsk State University, Tomsk, Russia
Keywords: оптические вихри, точки ветвления интерференционных полос, локальные наклоны, датчик Шека-Гартмана
Abstract
Two algorithms for determining the coordinates of optical vortices are considered. In one of them, the vortex position is found from the branching of interference fringes, and in the second algorithm, by processing the distribution of gradients of the wave front. It is shown that both algorithms allow recording coordinates with high accuracy; in addition, it is possible to determine displacements of singular points resulting from radiation diffraction Keywords: optical vortices, branch points of interference fringes, local inclinations, Shack-Hartmann sensor
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