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- W624882894 abstract "We present a simple technique based on a 4f coherent optical imaging system to characterize nonlinearities. We show that it is possible to characterize the nonlinearities by analyzing the intensity profile of the image after nonlinear filtering through the material under study in the Fourier plane of the set up. The experimental acquisitions are fitted by a simple theoretical model based on Fourier optics to obtain the nonlinear coefficient. The advantages of this method include simple optical setup, few-laser shots inside the material and a sensitivity comparable to other techniques. Further, by adding a phase object at the entry of the 4f system, it is possible to extract the sign and magnitude of the nonlinear optical refractive index of the material with only one intense laser shot and the sensitivity of the measurement can be increased. Several different compositions of chalcogenide glasses were studied and characterized for their linear and nonlinear properties." @default.
- W624882894 created "2016-06-24" @default.
- W624882894 creator A5069639624 @default.
- W624882894 date "2005-01-01" @default.
- W624882894 modified "2023-09-26" @default.
- W624882894 title "Applications de l'imagerie à la mesure des coefficients non linéaires des verres infrarouges" @default.
- W624882894 hasPublicationYear "2005" @default.
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