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 | |
| 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 |
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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
Cite this
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
}
TY - GEN
T1 - Screening of singular points of vector field of phase gradient, localization of optical vortices and reconstruction of wavefront with screw dislocations
AU - Aksenov, Valerii P.
AU - Izmailov, Igor V.
AU - Kanev, Feodor Yu
AU - Starikov, Feodor A.
PY - 2006
Y1 - 2006
N2 - 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.
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.
KW - Detection algorithm of singular point positions
KW - Optical vortices
KW - Phase reconstruction
KW - Singular optics
KW - Singular points
KW - Wave-front dislocations
UR - http://www.scopus.com/inward/record.url?scp=33645392031&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33645392031&partnerID=8YFLogxK
U2 - 10.1117/12.674988
DO - 10.1117/12.674988
M3 - Conference contribution
AN - SCOPUS:33645392031
VL - 6162
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Panchenko, V.Y.
A2 - Golubev, V.S.
ER -