生长了不同硼酸掺杂浓度的KDP晶体 ,用超显微镜观察了晶体内部的散射颗粒 ,检测了晶体的光损耗和透过率特性。实验结果表明 ,较高浓度的硼酸对KDP晶体的光学均匀特性有较大影响 ,并使晶体具有显著的旋光性和波片效应 KDP crystals with different boric acid doping concentrations were grown. The scattering particles inside the crystal were observed with an ultramicroscope. The optical loss and transmittance of the crystal were measured. The experimental results show that the higher concentration of boric acid has a greater impact on the optical uniformity of KDP crystals and the crystal has significant optical activity and wave plate effect