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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 10 — Oct. 1, 2008
  • pp: 1738–1747

Comparison of Z-scan and THG derived nonlinear index of refraction in selected organic solvents

Ileana Rau, François Kajzar, Jérôme Luc, Bouchta Sahraoui, and Georges Boudebs  »View Author Affiliations

JOSA B, Vol. 25, Issue 10, pp. 1738-1747 (2008)

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Nonlinear index of refraction of a series of organic solvents, measured by the nonlinear imaging (z-scan) technique, is compared with the same values derived from optical third-harmonic generation (THG). The systematic differences in the values obtained from the z-scan measurements and from THG are attributed to three factors: the value of the standard used in THG measurements, important rotational contribution in z-scan measurements, and the difference in dispersion for n 2 derived from Kerr susceptibility and those derived from THG measurements. Using the recently proposed standard silica susceptibility value, one obtains a very good agreement for silica and significant differences for the solvents, particularly for C S 2 and chlorobenzene. A correction based on a three-level model for centrosymmetric media is applied for dispersion.

© 2008 Optical Society of America

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials

ToC Category:
Nonlinear Optics

Original Manuscript: February 19, 2008
Revised Manuscript: July 9, 2008
Manuscript Accepted: July 28, 2008
Published: September 26, 2008

Ileana Rau, François Kajzar, Jérôme Luc, Bouchta Sahraoui, and Georges Boudebs, "Comparison of Z-scan and THG derived nonlinear index of refraction in selected organic solvents," J. Opt. Soc. Am. B 25, 1738-1747 (2008)

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