中文摘要：

综述了四价掺杂（包括铪和锆）铌酸锂晶体的研究进展．掺铪铌酸锂晶体具有与掺镁铌酸锂晶体相似的抗光折变性能，而掺锆铌酸锂晶体的抗光折变性能远优于掺镁铌酸锂晶体．铪铁双掺与锆铁双掺铌酸锂晶体兼有高光折变灵敏度和高光折变衍射效率的性质．并且在掺杂量超过阈值时，铪离子和锆离子在铌酸锂晶体中都具有接近于1的有效分凝系数．这些实验结果表明，四价掺杂铌酸锂有望成为出色的非线性光学晶体．

英文摘要：

The recent progress of HfO2 and ZrO2 doped LiNbO3 crystals was reviewed. LN： Hf crystal has similar optical damage resistance as LN ： Mg, but LN ： Zr has much better property than LN ： Mg. LN ： Fe, Hf and LN ： Fe, Hf crystals have both fast photorefractive response speed and high saturation diffraction efficiency. And the distribution coefficient of ZrO2 in LiNbO3 is close to one. These results indicate that the tetravalent ions doped LiNbO3 will be the excellent nonlinear optical crystals.