利用掺ＣＵ的ＫＮＳＢＮ晶体做成的自泵浦相位共轭镜可以补偿由于热自聚焦效应引起的随时间慢变的空间自调相。即由非线性介质引起的时间慢变的波前畸变可以利用相位共轭技术进行补偿。实验发现、尽管相位共轭反射率在时间上有较大幅度的不规则起伏．但相位共轭镜对波前畸变的补偿仍相当理想。 Self-pumped phase conjugate mirrors made with CU-doped KNSBN crystals can compensate for the spatial self-phase modulation that slowly changes over time due to thermal autofocusing effects. That is, the time-dependent wavefront distortion caused by nonlinear media can be compensated by the phase conjugation technique. The experiment found that, although the phase conjugate reflectivity in the time there is more significant irregular fluctuations. However, the phase conjugate mirror compensation for wavefront distortion is still quite satisfactory.