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基于神光Ⅲ原型激光装置上建成的近背向散射诊断系统,设计了一种可探测近背向散射能量空间分布的时间过程的采集方法,并通过静态实验对该方法的可行性进行了验证。结果表明:通过一维转二维传像束,将二维图像记录成一维信息,然后通过数据后处理还原成二维图像信息的方法可以实现能量空间分布的时间分辨测量。将该方法用于近背向散射光诊断系统,可以得到近背向散射光能量空间分布随时间变化的信息,为深入分析激光等离子体相互作用实验中近背向散射光构成及变化过程提供重要数据。
Based on the near-backscatter diagnostic system built on the prototype SGS laser device, a time-collecting method to detect the spatial distribution of near-backscattering energy was designed and the feasibility of the method was verified through static experiments . The results show that time-resolved energy spatial distribution can be achieved by recording one-dimensional image into one-dimensional information through one-dimensional to two-dimensional image beam and then restoring it into two-dimensional image information through data post-processing. Using this method for the near-backscattered light diagnostic system, the spatial distribution of near-backscattered light energy over time can be obtained, which provides important information for further analysis of the composition and variation of near-backscattered light in laser-plasma interaction experiments data.