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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Stephen A. Burns
  • Vol. 26, Iss. 4 — Apr. 1, 2009
  • pp: 741–744

Evolution of singularities in a partially coherent vortex beam

Thomas van Dijk and Taco D. Visser  »View Author Affiliations

JOSA A, Vol. 26, Issue 4, pp. 741-744 (2009)

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We study the evolution of phase singularities and coherence singularities in a Laguerre–Gauss beam that is rendered partially coherent by letting it pass through a spatial light modulator. The original beam has an on-axis minumum of intensity—a phase singularity—that transforms into a maximum of the far-field intensity. In contrast, although the original beam has no coherence singularities, such singularities are found to develop as the beam propagates. This disappearance of one kind of singularity and the gradual appearance of another is illustrated with numerical examples.

© 2009 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(050.4865) Diffraction and gratings : Optical vortices
(260.6042) Physical optics : Singular optics

ToC Category:
Diffraction and Gratings

Original Manuscript: December 10, 2008
Manuscript Accepted: January 28, 2009
Published: March 10, 2009

Thomas van Dijk and Taco D. Visser, "Evolution of singularities in a partially coherent vortex beam," J. Opt. Soc. Am. A 26, 741-744 (2009)

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