Screening of singular points of vector field of phase gradient, localization of optical vortices and reconstruction of wavefront with screw dislocations

Abstract

The algorithms for screening singular points of the phase gradient vector field are developed, where vector field components can be measured with a Shack-Hartmann wavefront sensor or shearing interferometer. Special attention is focused on the singular points that allow localization of optical vortices (wavefront dislocations). Determination of the coordinates and the topological vortex charges is of special importance in optical vortex interferometry, in operation of optical communication devices that encode information by means of optical vortices, and for reconstruction of phase distribution of optical beams that propagate in a medium with dislocations. On basis of numerical modeling, accuracy of the algorithm is verified, comparison with other algorithms executed, and its advantages and drawbacks are analyzed. Performance results are presented of the singular wavefront recovery algorithm, whose operating requirement is preliminary detection of optical vortex dislocations.

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Editors	V.Y. Panchenko, V.S. Golubev
Volume	6162
DOIs	https://doi.org/10.1117/12.674988
Publication status	Published - 2006
Event	International Conference on Lasers, Applications, and Technologies 2005 - Laser Sensing, Imaging and Information Technologies - St. Petersburg, Russian Federation Duration: 11 May 2005 → 15 May 2005

Other

Other	International Conference on Lasers, Applications, and Technologies 2005 - Laser Sensing, Imaging and Information Technologies
Country	Russian Federation
City	St. Petersburg
Period	11.5.05 → 15.5.05

Keywords

Detection algorithm of singular point positions
Optical vortices
Phase reconstruction
Singular optics
Singular points
Wave-front dislocations

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

Access to Document

10.1117/12.674988

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Aksenov, V. P., Izmailov, I. V., Kanev, F. Y., & Starikov, F. A. (2006). Screening of singular points of vector field of phase gradient, localization of optical vortices and reconstruction of wavefront with screw dislocations. In V. Y. Panchenko, & V. S. Golubev (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6162). [61620D] https://doi.org/10.1117/12.674988

Screening of singular points of vector field of phase gradient, localization of optical vortices and reconstruction of wavefront with screw dislocations. / Aksenov, Valerii P.; Izmailov, Igor V.; Kanev, Feodor Yu; Starikov, Feodor A.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / V.Y. Panchenko; V.S. Golubev. Vol. 6162 2006. 61620D.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Aksenov, VP, Izmailov, IV, Kanev, FY & Starikov, FA 2006, Screening of singular points of vector field of phase gradient, localization of optical vortices and reconstruction of wavefront with screw dislocations. in VY Panchenko & VS Golubev (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 6162, 61620D, International Conference on Lasers, Applications, and Technologies 2005 - Laser Sensing, Imaging and Information Technologies, St. Petersburg, Russian Federation, 11.5.05. https://doi.org/10.1117/12.674988

Aksenov VP, Izmailov IV, Kanev FY, Starikov FA. Screening of singular points of vector field of phase gradient, localization of optical vortices and reconstruction of wavefront with screw dislocations. In Panchenko VY, Golubev VS, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6162. 2006. 61620D https://doi.org/10.1117/12.674988

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abstract = "The algorithms for screening singular points of the phase gradient vector field are developed, where vector field components can be measured with a Shack-Hartmann wavefront sensor or shearing interferometer. Special attention is focused on the singular points that allow localization of optical vortices (wavefront dislocations). Determination of the coordinates and the topological vortex charges is of special importance in optical vortex interferometry, in operation of optical communication devices that encode information by means of optical vortices, and for reconstruction of phase distribution of optical beams that propagate in a medium with dislocations. On basis of numerical modeling, accuracy of the algorithm is verified, comparison with other algorithms executed, and its advantages and drawbacks are analyzed. Performance results are presented of the singular wavefront recovery algorithm, whose operating requirement is preliminary detection of optical vortex dislocations.",

keywords = "Detection algorithm of singular point positions, Optical vortices, Phase reconstruction, Singular optics, Singular points, Wave-front dislocations",

author = "Aksenov, {Valerii P.} and Izmailov, {Igor V.} and Kanev, {Feodor Yu} and Starikov, {Feodor A.}",

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AU - Starikov, Feodor A.

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AB - The algorithms for screening singular points of the phase gradient vector field are developed, where vector field components can be measured with a Shack-Hartmann wavefront sensor or shearing interferometer. Special attention is focused on the singular points that allow localization of optical vortices (wavefront dislocations). Determination of the coordinates and the topological vortex charges is of special importance in optical vortex interferometry, in operation of optical communication devices that encode information by means of optical vortices, and for reconstruction of phase distribution of optical beams that propagate in a medium with dislocations. On basis of numerical modeling, accuracy of the algorithm is verified, comparison with other algorithms executed, and its advantages and drawbacks are analyzed. Performance results are presented of the singular wavefront recovery algorithm, whose operating requirement is preliminary detection of optical vortex dislocations.

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