The constitutional supercooling and internal growth striation in the SNLN crystals have been overcome and the optical homogeneity of the crystals have been improved by employing optimum growth condition and technique. 采用最佳的生长和工艺条件克服了铌酸锶钠锂晶体的组分过冷和内部生长条纹,提高了晶体的光学均匀性。