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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 5 — Mar. 5, 2007
  • pp: 2517–2529

Influence of the photoinduced focal length of a thin nonlinear material in the Z-scan technique

Edmundo Reynoso Lara, Zulema Navarrete Meza, M. David Iturbe Castillo, Carlos G Treviño Palacios, Erwín Martí Panameño, and M. Luis Arroyo Carrasco  »View Author Affiliations

Optics Express, Vol. 15, Issue 5, pp. 2517-2529 (2007)

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In this paper the response purely refractive of a thin nonlinear material, in the z-scan technique experiment, is modeled as a lens with a focal length that is a function of some integer power of the incident beam radius. We demonstrate that different functional dependences of the photoinduced lens of a thin nonlinear material give typical z-scan curves with special features. The analysis is based on the propagation of Gaussian beams in the approximation of thin lens and small distortion for the nonlinear sample. We obtain that the position of the peak and valley, the transmittance near the focus and the transmittance far from the Rayleigh range depend on the functional dependence of the focal length. Special values of the power reproduce the results obtained for some materials under cw excitation.

© 2007 Optical Society of America

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.5940) Nonlinear optics : Self-action effects

ToC Category:
Nonlinear Optics

Original Manuscript: December 8, 2006
Manuscript Accepted: February 9, 2007
Published: March 5, 2007

Edmundo Reynoso Lara, Zulema Navarrete Meza, M. David Iturbe Castillo, Carlos G. Treviño Palacios, Erwín Martí Panameño, and M. Luis Arroyo Carrasco, "Influence of the photoinduced focal length of a thin nonlinear material in the Z-scan technique," Opt. Express 15, 2517-2529 (2007)

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