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

Valerii P. Aksenov; Igor V. Izmailov; Feodor Yu. Kanev; Feodor A. Starikov

doi:10.1117/12.674988

9 June 2006 Screening of singular points of vector field of phase gradient, localization of optical vortices and reconstruction of wavefront with screw dislocations

Valerii P. Aksenov, Igor V. Izmailov, Feodor Yu. Kanev, Feodor A. Starikov

Author Affiliations +

Proceedings Volume 6162, International Conference on Lasers, Applications, and Technologies 2005: Laser Sensing, Imaging, and Information Technologies; 61620D (2006) https://doi.org/10.1117/12.674988
Event: International Conference on Lasers, Applications, and Technologies 2005, 2005, St. Petersburg, Russian Federation

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 optjcal 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.

Citation Download Citation

Valerii P. Aksenov, Igor V. Izmailov, Feodor Yu. Kanev, and Feodor A. Starikov "Screening of singular points of vector field of phase gradient, localization of optical vortices and reconstruction of wavefront with screw dislocations", Proc. SPIE 6162, International Conference on Lasers, Applications, and Technologies 2005: Laser Sensing, Imaging, and Information Technologies, 61620D (9 June 2006); https://doi.org/10.1117/12.674988

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available