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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 29, Iss. 8 — Aug. 1, 2012
  • pp: 2099–2102

Generation of quadrupoles through instability of dark rings in photorefractive media

Pravin Vaity and Ravindra Pratap Singh  »View Author Affiliations

JOSA B, Vol. 29, Issue 8, pp. 2099-2102 (2012)

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We have produced beams with dark rings and studied their propagation through photovoltaic photorefractive media. We observe that dark rings, instead of forming dark ring solitons, break into vortex–antivortex pairs, forming quadrupoles. The experimental results could be taken as a consequence of modulational instability during beam propagation that is revealed through our numerical analysis.

© 2012 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.5330) Nonlinear optics : Photorefractive optics
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Nonlinear Optics

Original Manuscript: April 16, 2012
Revised Manuscript: June 5, 2012
Manuscript Accepted: June 16, 2012
Published: July 20, 2012

Pravin Vaity and Ravindra Pratap Singh, "Generation of quadrupoles through instability of dark rings in photorefractive media," J. Opt. Soc. Am. B 29, 2099-2102 (2012)

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