Theoretical and experimental development of the Z-scan method and its application for the characterization of LiNbO3

L. Pálfalvi; K. Lengyel; Á. Péter; J. A. Fülöp; T. Reiter; J. Hebling

doi:10.1117/12.849871

11 November 2009 Theoretical and experimental development of the Z-scan method and its application for the characterization of LiNbO₃

L. Pálfalvi, K. Lengyel, Á. Péter, J. A. Fülöp, T. Reiter, J. Hebling

Author Affiliations +

Proceedings Volume 7501, International Conference on Ultrafast and Nonlinear Optics 2009; 75010F (2009) https://doi.org/10.1117/12.849871
Event: Ultrafast Nonlinear Optics 2009, 2009, Bourgas, Bulgaria

Abstract

Z-scan is a well established sensitive and accurate technique used to determine nonlinear absorption and refraction. In this paper a review-like study of the Z-scan applications for the examination of LiNbO₃ crystals with different stoichiometry and with different dopants will be presented. By the extension standard Z-scan setup the cubic, the thermo-optical and the photorefractive nonlinearity can be examined. Theoretical calculations together with the measurements make possible to characterize quantitatively the thermo-optical nonlinearity and to determine the threshold dopant concentration of the photorefractive damage which is very important for nonlinear optical applications. Pure and Mg doped stoichiometric as well as congruent, and In, Hf, Zr or Y/Mg doped congruent LN samples were examined. Furthermore, a Z-scan theory based on the solution of the nonlinear paraxial wave equation, completed by the Huygens-Fresnel principle is introduced. This theory is valid for the general case, i.e. for thick samples and strong nonlinearities including both nonlinear refraction and absorption.

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L. Pálfalvi, K. Lengyel, Á. Péter, J. A. Fülöp, T. Reiter, and J. Hebling "Theoretical and experimental development of the Z-scan method and its application for the characterization of LiNbO₃", Proc. SPIE 7501, International Conference on Ultrafast and Nonlinear Optics 2009, 75010F (11 November 2009); https://doi.org/10.1117/12.849871

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