This paper is complex parameters and ABCD law to research the principle of transmission and transformation of Gaussian beam in BBO crystal. It is good to quickly grasp the law of transmission & transformation of Gaussian beam in nonlinear crystal.

• 本文使用高斯光束的复参数表示和 ABCD定律研究了高斯光束 BBO晶体中的传输变换规律 ,为进一步掌握高斯光束在晶体非线性效应下的变换规律打下了良好的基础