Abstract

In this work we determined the influence of potassium-to-sodium ion exchange in the nonlinear refractive value ($n_2$) of Corning’s Gorilla Glass (GG). Due to the production process, GG has a rich potassium surface in comparison to the original sodium matrix glass. In order to determine the nonlinear cross-section profile, we have used a highly sensitive nonlinear elliptical rotation spatial measurement. Using a simple model, where the nonlinearity varies exponentially with depth, we observed that the value of the nonlinear refraction at the surface is about 22% greater than that of the matrix interior with a penetration depth constant of $\sim 50\mathrm{\mu m}$.

© 2019 Optical Society of America

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