在1060~1100 ℃的温度范围内和真空条件下对Nd,Y∶SrF2激光晶体进行了高温退火处理，测试了高温退火前后Nd,Y∶SrF2晶体的X射线双晶摇摆曲线、抗弯强度、应力分布和波前畸变图谱。结果表明,高温退火能有效改善晶体的结晶性能、抗弯强度、应力分布和光学均匀性。当退火温度为1080 ℃、退火时间为36 h时，获得的晶体综合性能最优，该温度和时间为最佳退火参数。

Under vacuum condition, the Nd, Y∶SrF2 laser crystals were annealed at high temperatures from 1060 ℃ to 1100 ℃. The X-ray double crystal rocking curve, the bending strength, the stress distribution, and the wave-front aberration spectrum of Nd, Y∶SrF2 crystals were measured before and after annealing. The results show that the crystallization properties, the bending strength, the stress distribution and the optical homogeneity of the crystals are improved by annealing at a high temperature. When the annealing temperature is 1080 ℃ and the annealing time is 36 h , the crystal is obtained with the best integrated performance, and hence the annealing temperature of 1080 ℃ and the annealing time of 36 h are the optimal annealing parameters.