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Proceedings Paper

Theoretical and experimental development of the Z-scan method and its application for the characterization of LiNbO3
Author(s): L. Pálfalvi; K. Lengyel; Á. Péter; J. A. Fülöp; T. Reiter; J. Hebling
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Paper 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.

Paper Details

Date Published: 11 November 2009
PDF: 8 pages
Proc. SPIE 7501, International Conference on Ultrafast and Nonlinear Optics 2009, 75010F (11 November 2009); doi: 10.1117/12.849871
Show Author Affiliations
L. Pálfalvi, Univ. of Pécs (Hungary)
K. Lengyel, Research Institute for Solid State Physics and Optics (Hungary)
Á. Péter, Research Institute for Solid State Physics and Optics (Hungary)
J. A. Fülöp, Univ. of Pécs (Hungary)
T. Reiter, Univ. of Pécs (Hungary)
J. Hebling, Univ. of Pécs (Hungary)

Published in SPIE Proceedings Vol. 7501:
International Conference on Ultrafast and Nonlinear Optics 2009
Solomon M. Saltiel; Alexander A. Dreischuh; Ivan P. Christov, Editor(s)

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