高功率固体激光驱动器大口径光机单元精密装配的关键技术原理及应用

课题以在高功率固体激光驱动器中具有典型意义的大口径激光传输反射镜集成装配问题为背景，重在阐明大口径光机单元的装配误差形成机理及其装配精度优化的基础方法。首先从高功率激光驱动器的总体性能指标出发，分析对大口径反射镜的波前性能有重大影响的面形误差、对准误差等关键装配指标的形成原理，通过建立工作环境的参数化激光物理条件模型研究工况约束对反射镜装配性能的重要影响作用。进而针对大口径反射镜的典型技术特点，将装配误差建模理论与力学、材料、激光/热物理等基础理论方法结合起来，建立光/机一体的综合研究体系，揭示复杂物理条件下的大口径激光传输反射镜的装配误差形成规律及其装配性能稳定的关键技术条件，也为我国高功率激光驱动器大口径光机组件的装配设计与优化研究提出科学的指导方法。

To solve the integrated assembly problem of large aperture transport mirror in the high power solid-state laser facility (SG-III), the focuses of this project are put on the technical mechanism of assembly error accumulation and the fundamental method for assembly accuracy optimization. Firstly, important assembly technical specifications, including surface profile, alignments, etc., which can affect the wavefront performance of large aperture optical unit very much are analyzed in detail, based on the total performance requirements of high power laser facility. Then, the impact of laser physical conditions on the transport mirror’s assembly performance is discussed and the physical conditions are defined as parametric constraint models. And subsequently, a comprehensive opto-mechanical framework integrated the theories of mechanical assembly, mechanics, materials, laser and thermal physics, is proposed as a fundamental method to model both of the optical unit’s assembly error accumulation and its assembly accuracy/performance stability condition. Finally, this research methodology also can provide a general scientific guideline for precision assembly design and application of the optical units in China’s high power solid-state laser facility.