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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. 26, Iss. 3 — Mar. 1, 2009
  • pp: 487–492

Polarization and configuration dependence of beam self-focusing in photorefractive Li Nb O 3

J. Safioui, M. Chauvet, F. Devaux, V. Coda, F. Pettazzi, M. Alonzo, and E. Fazio  »View Author Affiliations


JOSA B, Vol. 26, Issue 3, pp. 487-492 (2009)
http://dx.doi.org/10.1364/JOSAB.26.000487


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Abstract

We present numerical and experimental analyses showing the formation of ( 2 + 1 ) D spatial photorefractive solitons at visible wavelengths in electrically biased lithium niobate crystals for ordinary and extraordinary light polarizations. Similarly sized self-trapped beams are observed for both polarizations, despite the polarization-dependent electro-optic coefficients. The tensorial character of the photovoltaic effect is shown to play a key role. The soliton-induced waveguides are able to properly guide telecommunication wavelengths. Finally, a higher degree of anisotropy is observed for ordinary polarized solitons for specific electro-optic configurations, which reveals the presence of the photorefractive field component perpendicular to the applied field. Experimental results are confirmed by a time-dependent numerical model.

© 2009 Optical Society of America

OCIS Codes
(190.5330) Nonlinear optics : Photorefractive optics
(190.6135) Nonlinear optics : Spatial solitons

ToC Category:
Nonlinear Optics

History
Original Manuscript: October 2, 2008
Revised Manuscript: January 6, 2009
Manuscript Accepted: January 10, 2009
Published: February 17, 2009

Citation
J. Safioui, M. Chauvet, F. Devaux, V. Coda, F. Pettazzi, M. Alonzo, and E. Fazio, "Polarization and configuration dependence of beam self-focusing in photorefractive LiNbO3," J. Opt. Soc. Am. B 26, 487-492 (2009)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-26-3-487

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