Vol. 32, issue 08, article # 3

Kanev F.Yu., Aksenov V.P., Starikov F.A., Dolgopolov Yu.V., Kopalkin A.V., Veretekhin I.D. Detection of an optical vortex topological charge and coordinates by analyzing branches of an interference pattern. // Optika Atmosfery i Okeana. 2019. V. 32. No. 08. P. 620–627 [in Russian].
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Abstract:

An algorithm of optical vortex detection is considered in the article and a computer application based on the algorithm is described. A vortex is localized as a branching point of an interference pattern. As the input data for the application a BMP-file containing an image of interferogram is used, at the output we obtain information about the vortex topological charge and its coordinates. As is shown in the article, precision of the developed algorithm is not lower than that of known analogues, while the amount of obtained information is larger.

Keywords:

singular optics, optical vortex, singular point of a wavefront, topological charge

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