We report a straightforward method to control main spatio-temporal couplings in a chirped pulse amplification (CPA) laser chain system using a specially designed chromatic doublet in a divergent beam configuration. The centering of the doublet allows for the control of the spatial chirp of the CPA laser chain, while its longitudinal position in the divergent beam enables the control of the amount of longitudinal chromatism in a wide dynamic range. The performance of this technique is evaluated by measuring main spatio-temporal couplings with a simple method, based on an ultrafast pulse shaper, which allows for a selection of narrow windows of the spectrum.

中文翻译：

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CPA激光链中主要时空耦合的测量与控制

我们报告了一种简单的方法来控制啁啾脉冲放大 (CPA) 激光链系统中的主要时空耦合，在发散光束配置中使用专门设计的彩色双峰。双峰的居中允许控制 CPA 激光链的空间啁啾，而其在发散光束中的纵向位置能够在宽动态范围内控制纵向色差量。这种技术的性能是通过使用一种简单的方法测量主要的时空耦合来评估的，这种方法基于超快脉冲整形器，允许选择光谱的窄窗口。