Growth, dielectric and nonlinear optical properties of Li3Cs2B5O10 single crystals

Lithium cesium borate (Li3Cs2B5O10), an alkali metal borate, single crystals were grown by Czochralski method. Chemical etching was performed on grown Li3Cs2B5O10 crystal at various regions. The observed dislocation densities are varied at different regions of the grown Li3Cs2B5O10 crystal. Dielectric behavior of Li3Cs2B5O10 crystal at different temperatures is studied. The third-order nonlinear optical parameters of lithium cesium borate crystal are determined by Z-scan technique. The nonlinear refractive index (n2) value is estimated to be −7.272 × 10−11 cm2/W, and the corresponding third-order nonlinear susceptibility (χ3) is estimated to be 4.19 × 10−9 esu. The measured nonlinear refractive indices reveal the self-defocusing effect of Li3Cs2B5O10 crystal.