本文通过理论分析和实验发现,在界面翻转期间,对界面的良好控制是防止缺陷增生、生长完整晶体的一个重要措施.为此,设计出了一种简易的控制固液界面形状的程序控制系统,使用该系统有助于拉制高质量的YAG晶体. In this paper, theoretical analysis and experiments show that during the interface inversion, the good control of the interface is an important measure to prevent the proliferation of defects and the growth of complete crystals.Therefore, a simple program control system , Using this system helps to draw high-quality YAG crystals.