Crystal growth, structural, optical, mechanical and thermal properties of a third-order nonlinear material bis-glycine lithium bromide monohydrate single crystal

摘要

ABSTRACT Well-developed transparent single crystals of bis-glycine lithium bromide were grown by the slow evaporation method. The grown crystals were characterized by powder X-ray diffraction analysis, Fourier transform infrared spectroscopy, thermogravimetric analysis (TGA), differential thermal analysis and differential scanning calorimetry analyses. UV–VIS–NIR spectrum shows excellent transmission in the UV, visible and NIR regions. Mechanical properties of the grown crystals were studied using the Vickers microhardness tester. Third-order nonlinear optical properties were studied in detail by the Z-scan technique with He–Ne laser radiation of wavelength 632.8?nm and the corresponding nonlinear refractive index, absorption coefficient and optical susceptibility were calculated.