Comparison of Accuracy in the Determination of Optical Vortex Coordinates by Different Methods

Two algorithms for the determination of optical vortex coordinates are considered. In the first one, the vortex is found by branching of interference pattern fringes; in the second one, as a result of processing of the wavefront gradient distribution. It is shown that both algorithms allow one to re...

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Veröffentlicht in:	Optoelectronics, instrumentation, and data processing instrumentation, and data processing, 2020-05, Vol.56 (3), p.221-227
Hauptverfasser:	Kanev, F. Yu, Aksenov, V. P., Makenova, N. A., Veretekhin, I. D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Computational and Data Acquisition Systems Lasers Optical Devices Optics Photonics Physics Physics and Astronomy
Online-Zugang:	Volltext
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Zusammenfassung:	Two algorithms for the determination of optical vortex coordinates are considered. In the first one, the vortex is found by branching of interference pattern fringes; in the second one, as a result of processing of the wavefront gradient distribution. It is shown that both algorithms allow one to record the coordinates with a high accuracy; in addition, it is possible to determine shifts of singular points appearing as a result of radiation diffraction.
ISSN:	8756-6990 1934-7944
DOI:	10.3103/S8756699020030061