利用置于神光Ⅲ原型(TIL)装置靶室波前测量系统,获得8束激光全光路静态像差,将测量结果分别过渡到各路主放参数诊断包内的波前传感器。基于主放注入位置的小口径变形镜和主放参数诊断包内的波前传感器,对全光路像差进行闭环校正,利用CCD相机对靶面焦斑进行测量。实验结果表明,全光路像差闭环校正后8束激光在靶面位置的焦斑能量集中度有明显改善,验证了小口径变形镜全光路像差的控制能力,满足了物理实验对靶面焦斑能量集中度的控制要求。

Each entire beam path static wavefront of technical integration experiment line (TIL) was obtained by the wavefront measurement system in the target chamber. The result was transited to wavefront sensor in the main amplifier diagnostic package. Based on the deformable mirror at the injection of main amplifier and the wavefront sensor placed at the diagnostic package,the wavefront of entire beam path was corrected with closed loop. A charge coupled device (CCD) was placed at the target point to monitor the laser farfield. As result shows,the energy concentration had visible improvement. The method effectively improves control ability of laser facility entire beam wavefront by small deformable mirror which meets the requirement of physical experiment.