Abstract. Due to the unique mechanical and optical characteristics, it is difficult to carry out experimental research and online measurement for large-aperture ICF frequency converters. To analyze and optimize the performance of the frequency converters under complex process loads, we present an integrated optomechanical method that correlates actual process loads with laser critical characteristics. Based on the established optomechanical model, the key factor that induces the loss of harmonic generation efficiency is identified. In addition, the proposed method is conductive to rapid evaluation, prediction, and optimization of comprehensive performance of frequency converters. Thereby, we propose an adaptive frequency conversion system (AFCS). The results indicate that AFCS can not only minimize the phase mismatching of second harmonic generation doubler but also significantly improve the quality of far-field focal spot.

中文翻译：

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基于集成光机法的惯性约束聚变级联变频器性能分析与优化

摘要。由于其独特的机械和光学特性，大口径ICF变频器难以进行实验研究和在线测量。为了在复杂的过程负载下分析和优化变频器的性能，我们提出了一种集成的光机械方法，将实际过程负载与激光关键特性相关联。基于建立的光机模型，确定了引起谐波产生效率损失的关键因素。此外，所提出的方法有利于变频器综合性能的快速评估、预测和优化。因此，我们提出了一种自适应频率转换系统（AFCS）。