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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 11 — Nov. 1, 2006
  • pp: 2323–2327

Optical nonlinearity and existence conditions for quasi-steady-state photorefractive solitons

Eugenio DelRe and Elia Palange  »View Author Affiliations

JOSA B, Vol. 23, Issue 11, pp. 2323-2327 (2006)

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Generalizing soliton description using spatiotemporal wave variables, we identify and experimentally validate the nonlinearity supporting quasi-steady-state solitons in biased photorefractive crystals for the one-dimensional case, the transient counterpart of the explicit one-dimensional screening soliton theory. The approach leads to a non-Kerr-like spatially local exponential nonlinearity and explicitly provides soliton existence conditions. These find quantitative agreement with a series of experiments in potassium lithium tantalate niobate and reproduce previously described transient behavior.

© 2006 Optical Society of America

OCIS Codes
(190.5330) Nonlinear optics : Photorefractive optics
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons

ToC Category:
Nonlinear Optics

Original Manuscript: April 24, 2006
Revised Manuscript: July 14, 2006
Manuscript Accepted: July 20, 2006

Eugenio DelRe and Elia Palange, "Optical nonlinearity and existence conditions for quasi-steady-state photorefractive solitons," J. Opt. Soc. Am. B 23, 2323-2327 (2006)

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  21. Note the particlelike properties even during transients [see, for example, C. Denz, W. Krolikowski, J. Petter, C. Weilnau, T. Tschudi, M. R. Belic, F. Kaiser, and A. Stepken, "Dynamics of formation and interaction of photorefractive screening solitons," Phys. Rev. E 60, 6222-6225 (1999)]. [CrossRef]
  22. C. Dari-Salisburgo, E. DelRe, and E. Palange, "Molding and stretched evolution of optical solitons in cumulative nonlinearities," Phys. Rev. Lett. 91, 263903 (2003). [CrossRef]
  23. Locality allows extension to incoherent schemes.
  24. See S. Trillo and W. Torruellas, eds., Spatial Solitons (Springer, 2001), pp. 211-245.
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