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The nonlinear optical single crystals of diglycine barium chloride monohydrate were grown by slow evaporation solution growth technique from the mixture of an aqueous solution of glycine and barium chloride in the ratio 2:1 at room temperature. The grown crystals were characterized by various techniques such as single crystals X-ray diffraction, FTIR, UV-Vis-NIR spectra, Vickers hardness studies, thermogravimetric analysis, and fluorescence spectra. Its second harmonic generation efficiency was measured by Kurtz and Perry powder technique using Nd :YAG laser.

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ZTS has been grown using a slow evaporation technique at ambient temperature, and the L-alaninedoped ZTS was likewise prepared. Powder X-ray diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR) and Vickers's micro hardness test have all been used to analyse growing crystals.Both pure ZTS and L-Alanine-doped ZTS crystals have an orthorhombic structure. L-alanine doped ZTS had greater second harmonic generation (SHG) conversion e ciency. L-alanine doped ZTS crystals had a higher hardness than a pure ZTS sample. UV spectral analysis indicates that both crystals have excellent UV and visible transmission. Doping with L-alanine resulted in an increase in the melting point of the pure ZTS crystal.