Localization of optical vortices and reconstruction of wavefront with screw dislocations

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


A new algorithm of the dislocation localization is suggested. It is based on the analysis of projections field of phase gradients. Accuracy of the algorithm is verified by numerical simulation. Special attention is focused on the precision of singular points (wavefront dislocations) screening. The algorithm is evaluated with respect to others and its advantages and drawbacks are cleared up. The method described can be included in the software of the Hartmann's sensor and be used in the full-scale experiments. Also the original algorithm of phase reconstruction is proposed and its characteristics are estimated. This algorithm requires detection of dislocation coordinates so it should be used together with the algorithm of dislocation localization. In the paper the comparison is performed of the proposed algorithm with the well known Fried's algorithm. After that the phase reconstruction technique is included into the model of a typical adaptive optics system.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsM.T. Gruneisen, J.D. Gonglewski, M.K. Giles
Number of pages11
Publication statusPublished - 2005
EventAdvanced Wavefront Control: Methods, Devices, and Applications III - San Diego, CA, United States
Duration: 31 Jul 20052 Aug 2005


OtherAdvanced Wavefront Control: Methods, Devices, and Applications III
CountryUnited States
CitySan Diego, CA


  • Detection 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

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