论文部分内容阅读
大型高功率固体激光装置神光III中包括许多大型、精密光学模块,完成各类模块高精度准直是一项巨大的技术挑战。提出了基于光传输建模分析,数值计算、工程实践3个层次相融合的大型光学系统准直误差分析研究方法,并以空间滤波器系统为对象进行了深入的研究与分析。针对模块准直精度建立了带误差传递的光传输模型,借助误差分析方法,分析了主影响因子及权重,结合工程实际,完成了模块光轴精度分解。采用光轴实体化表征技术和齐次矩阵变换方法,实现了模块、光轴、镜片位姿统一表征,结合激光跟踪仪,完成准直平台设计。最后以具有亚毫弧度准直要求的典型光机模块为例,在工程环境下搭建了准直平台,验证了理论分析方法在实际工程中的适用性。这一方法对激光聚变装置中光机模块精密准直技术研究有着普遍指导意义。
Large-scale high-power solid-state laser device SG III includes many large, sophisticated optical modules, to complete high precision alignment of various modules is a huge technical challenge. A method of collimation error analysis for large-scale optical systems based on three-level modeling of optical transmission, numerical calculation and engineering practice is proposed. The spatial filter system is studied and analyzed in-depth. According to the accuracy of the module, an optical transmission model with error transmission is established. By means of error analysis, the main influencing factors and weights are analyzed. With the engineering practice, the optical axis resolution of the module is completed. The physical characterization of the optical axis and homogeneous matrix transformation are adopted to realize the uniform characterization of the module, the optical axis and the lens position. The laser tracker is used to complete the collimation platform design. Finally, taking the typical opto-mechanical module with the sub-millimeter radian collimation as an example, a collimation platform is set up under engineering environment, which verifies the applicability of the theoretical analysis method in practical engineering. This method has a general guiding significance for the research on precision collimation technology of the optical module in the laser fusion device.