Performance of a wavefront sensor in the presence of singular points

Valerii Aksenov, Igor Izmailov, Feodor Kanev, Feodor Starikov

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

2 Citations (Scopus)


In the present report the possibility of singular points detections using a Shack-Hartmann sensor is described and the precision of the developed detection algorithm is estimated. Also the algorithms of a singular wave front reconstruction are analyzed. Two algorithms are considered and their properties compared. One of them was developed by D. Fried, its description was found in literature. The second algorithm was developed by authors of the report. The both algorithms were introduced into the software of the sensor and insured satisfactory quality of singular phase reconstruction. The precision of algorithms compared in numerical investigations as well in real laboratory experiments.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2006
EventSpeckle06: Speckles, From Grains to Flowers - Nimes, France
Duration: 13 Sep 200615 Sep 2006


OtherSpeckle06: Speckles, From Grains to Flowers


  • 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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