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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 28, Iss. 11 — Nov. 1, 2011
  • pp: 2806–2811

Orbital angular momentum in noncollinear second-harmonic generation by off-axis vortex beams

Fabio Antonio Bovino, Matteo Braccini, Maurizio Giardina, and Concita Sibilia  »View Author Affiliations


JOSA B, Vol. 28, Issue 11, pp. 2806-2811 (2011)
http://dx.doi.org/10.1364/JOSAB.28.002806


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Abstract

We experimentally study the behavior of orbital angular momentum (OAM) of light in a noncollinear second- harmonic generation process. The experiment is performed by using a Type I BBO crystal under phase-matching conditions with femtosecond pumping fields at 830 nm . Two specular off-axis vortex beams carrying fractional OAM at the fundamental frequency are used. We analyze the behavior of the OAM of the second-harmonic (SH) signal when the optical vortex of each input field at the FF is displaced from the beam’s axis. We obtain different spatial configurations of the SH field, always carrying the same zero angular momentum.

© 2011 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Nonlinear Optics

History
Original Manuscript: June 8, 2011
Manuscript Accepted: September 1, 2011
Published: October 27, 2011

Virtual Issues
November 22, 2011 Spotlight on Optics

Citation
Fabio Antonio Bovino, Matteo Braccini, Maurizio Giardina, and Concita Sibilia, "Orbital angular momentum in noncollinear second-harmonic generation by off-axis vortex beams," J. Opt. Soc. Am. B 28, 2806-2811 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-11-2806


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