Thermal relaxation of optical nonlinearity in poled glasses

The thermal relaxation of second order optical nonlinearity in subsurface layer of a poled soda-lime silicate glass was studied. It is shown that the glass annealing below glass transition temperature leads to full relaxation of the nonlinearity. At the same time, the measurements of thermostimulate...

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Bibliographic Details
Main Authors: Reshetov Ilya, Kaasik Vladimir, Lipovskii Andrey, Tagantsev Dmitry, Zhurikhina Valentina
Format: Article
Language:English
Published: Peter the Great St.Petersburg Polytechnic University 2020-12-01
Series:St. Petersburg Polytechnical University Journal: Physics and Mathematics
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Online Access:https://physmath.spbstu.ru/article/2020.50.09/
Description
Summary:The thermal relaxation of second order optical nonlinearity in subsurface layer of a poled soda-lime silicate glass was studied. It is shown that the glass annealing below glass transition temperature leads to full relaxation of the nonlinearity. At the same time, the measurements of thermostimulated depolarization current demonstrate that spatial electric charge formed in the course of the glass polarization relaxes above glass transition temperature. This allows concluding that the second order optical nonlinearity in poled glasses is not induced by the spatial electric charge.
ISSN:2405-7223