Single crystals of tartaric acid lithium sulfate (TALS), a semi-organic nonlinear optical crystal has been successfully grown by slow evaporation solution growth technique. Single crystals were grown in a life span of 3 weeks. The grown crystals were characterized by single crystal X-ray diffraction to identify the lattice parameters. Fourier Transform Infra Red studies confirm the presence of various functional groups present in the crystal. Optical, mechanical, microscopic image and thermal stabilities of the title crystal was carried out to know the properties of the titled compound. Third order non-liner studies have also been studied by Z-scan techniques. Nonlinear absorption and nonlinear refractive index were found out and the third order bulk susceptibility of compound was also estimated. The negative sign in the refractive index indicates the self-defocusing nature of the crystal.

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用于光子学应用的新型半有机酒石酸硫酸锂单晶的三阶非线性光学性质的生长和研究

酒石酸硫酸锂单晶（TALS）是一种半有机非线性光学晶体，已通过缓慢蒸发溶液生长技术成功生长。单晶的生长寿命为 3 周。生长的晶体通过单晶 X 射线衍射表征，以确定晶格参数。傅里叶变换红外研究证实了晶体中存在各种官能团。进行标题晶体的光学、机械、显微图像和热稳定性以了解标题化合物的性质。还通过 Z 扫描技术研究了三阶非线性研究。发现了非线性吸收和非线性折射率，并估计了化合物的三阶体磁化率。