24 July 2002 Characterization of thermo-optic nonlinearities in glass filters using the Z-scan technique
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Proceedings Volume 4751, ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems; (2002) https://doi.org/10.1117/12.475922
Event: XVII International Conference on Coherent and Nonlinear Optics (ICONO 2001), 2001, Minsk, Belarus
Abstract
For nonlinear optical materials in which the excitation diffuses significantly during the time scale of measurement the usual analysis of a Z-scan experiment must be modified. We develop a simple first order theory based on a quadratic rather than Gaussian spatial modulation of the index of refraction. This leads to asymmetric Z-scan curves. We apply this theory to the study of the thermal-optic effect in a simple neutral density filter. A significant spatial phase chirp can be induced in these filters at modest intensities. The observed transmission curves agree well with the quadratic theory.
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Alexander N. Korolevich, Alexander N. Korolevich, Michael Scott Belsley, Michael Scott Belsley, } "Characterization of thermo-optic nonlinearities in glass filters using the Z-scan technique", Proc. SPIE 4751, ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems, (24 July 2002); doi: 10.1117/12.475922; https://doi.org/10.1117/12.475922
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