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双脉冲双向传输放大构型是一种在惯性约束聚变激光驱动器领域具有极大应用价值的新型多程放大技术。针对变形镜代替腔镜对双向传输放大构型两束脉冲波前畸变进行补偿的问题,通过将两束脉冲波前先拼接再补偿的方法,研究出了一种基于双变形镜双哈特曼-夏克传感器耦合控制的新型波前校正技术,并利用神光-Ⅲ主机装置的实测数据进行了模拟验证。结果表明,该技术能够有效控制两束激光传输放大过程中所引入的波前畸变,满足系统对空间滤波器过孔的要求。
The double pulse bidirectional transmission amplification configuration is a new multi-path amplification technology with great application value in the field of inertial confinement fusion laser driver. Aiming at the problem that the deformable mirror replaces the endoscope and compensates the two-wave transmission front-end distortion of the two-way transmission amplification configuration, a method based on double deformable mirror, double Hartmann - Shaker sensor coupled control of a new wavefront correction technology, and the use of SG-III host device measured data were simulated. The results show that this technique can effectively control the wavefront distortion induced by the two laser propagation amplifications and meet the requirements of the system for the vias of the spatial filter.