受激布里渊散射(SBS)应用到激光驱动器中，就要考虑脉冲的变形。针对上升前沿2ｎｓ的毫微秒泵浦脉冲，在其脉冲前沿根部引入缓慢上升的小信号和小的预脉冲后，研究振放双池受激布里渊散射相位共轭镜所产生的受激布里渊散射脉冲波形。结果表明，采用短放大池及短焦透镜能基本保真激光脉冲波形，对短放大池，采用不同的透镜焦距，可改变受激布里渊散射脉冲的预主脉冲峰值的比例。

When stimulated Brillouin scattering (SBS) is applied in laser drive system, it is necessary to consider the changes of SBS pulse shape, especially the leading edge shape, compared to pump pulse. For the pump pulse with several ns pulse width and 2ns leading edge, adding a small slow rising signal or a pre pulse at the root of pump pulse steep leading edge, then the SBS pulse shape is investigated for different two cell SBS phase conjugation (PC) mirror. The results show that the SBS leading edge shape can keep almost the same as the pump pulse for short amplifying cells and short focal length. The intensity ratio of SBS main-and pre-pulse is changed with different focal lengths for short amplifying cell.