Abstract

Magnesium hydroxide structures were formed by a pulsed copper vapor laser ablation of a magnesium target in water. These structures were characterized by x-ray powder diffraction, scanning electron microscopy, and the Z-scan technique. The measurements of nonlinear optical properties of $\mathrm{Mg}{(\mathrm{OH})}_2$ structures have been performed using a nanosecond Nd:YAG pulse laser at 532 nm by the Z-scan technique. The nonlinear refractive index $(n_2)$ and absorption coefficient $(\beta )$ of $\mathrm{Mg}{(\mathrm{OH})}_2$ structures were obtained from closed and open aperture Z-scans of the order of ${10}^{-13}{\mathrm{cm}}^2/\mathrm{W}$ and ${10}^{-7}\mathrm{cm}/\mathrm{W}$, respectively. The third-order nonlinear optical susceptibility, ${\chi }^{(3)}$, of $\mathrm{Mg}{(\mathrm{OH})}_2$ structures was measured of the order of ${10}^{-11}\mathrm{esu}$. The results suggest that $\mathrm{Mg}{(\mathrm{OH})}_2$ structures, in comparison with other materials that are candidates for the nonlinear optical devices, are cheaper and may be promising candidates for nonlinear optical applications.

© 2016 Optical Society of America

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