Theoretical treatment, simulation of new UV crystal CsLiB$_6$O$_{10}$ on third-harmonic generation

We have calculated the theoretical properties of the nonlinear crystal CsLiB$_6$O$_{10}$ (CLBO) in third-harmonic generation (THG). Such as the phase matching angle, effective nonlinear coefficient, walk-off angle, permitted angle, permitted wavelength, and have found out that the CLBO has smaller walk-off angle, large permitted parameters as compared with BBO. The numerical simulation curves of the conversion efficiency are obtained, when the CLBO is used in THG of the $Q$-switched Nd:YAG laser with the wavelength of $1064$ nm and of the different pump power, and the optimized efficiency is as high as $22\%$, all of which followed that the CLBO crystal is more suitable to generating a higher order harmonic radiation of intensity power.