In this study, a model is proposed to design and manage the stray light of a compact final optics assembly (FOA) for a high energy laser system. Based on the method we proposed, the high-order stray light can be managed to optimizing the position and angle of the optical elements. A light trap is designed to manage the first-order stray light with high fluence. Applying the method, we provide an experimental demonstration to designing a compact FOA. By comparing the cleaning results with no management testing result, it proves that using the above design and management, it can achieve the great improvement of cleanliness from ISO Class 5 to Class 3, which is significant to improve the output capability of the high energy laser system. In addition, we also verify the stray light by an optical field paper. It demonstrates that the field characteristics and position calculation of stray light are reliable.

中文翻译：

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高能激光系统上紧凑型最终光学组件的杂散光设计与管理

在这项研究中，提出了一个模型，用于设计和管理用于高能激光系统的紧凑型最终光学组件（FOA）的杂散光。基于我们提出的方法，可以管理高阶杂散光以优化光学元件的位置和角度。光阱设计用于以高通量管理一阶杂散光。应用该方法，我们提供了设计紧凑型FOA的实验演示。通过比较清洁结果和无管理测试结果，证明使用上述设计和管理，可以实现从ISO 5级到3级的清洁度的极大提高，对于提高高能激光器的输出能力具有重要意义。系统。此外，我们还通过光场纸验证了杂散光。