空间滤波器阵列结构优化设计

Optimization of spatial filter matrix

给出了新型大型激光装置阵列化空间滤波器结构优化设计。对大口径阵列化光束超长程传输、光路控制、光束质量控制,以及支撑稳定性、震动隔离、离轴调节等关键技术进行了分析研究,对物理方案和参数进行分解。运用Pro/E软件建立阵列化空间滤波器三维实体模型,给出了阵列化空间滤波器的总体结构解决方案。对关键部件和技术指标进行了详细分析,采取了新颖的结构和相应的技术措施;运用ANSYS分析软件对结构刚性、强度、振型等指标进行分析,通过有限元仿真与CAD环境的双向嵌入优化结构;为给装置结构的适应性找到可靠的评估依据,对影响稳定性较大的器件和单元进行了微振动测试和分析。理论分析和测试结果表明,该方案达到了优化设计,是可行的。

The key techniques of spatial filter matrix used in large laser facility such as super-long-distance beam transmission, beam control, beam quality control, stability of supporting structure, adjustment accuracy of all coupling glasses, stability of glass mounts, off-axis adjustment are studied. This paper surveys current technology of spatial filters, determines the specifications of the system, and finally provides a comprehensive solution for the structure design of spatial filter by using ＂Pro/ E＂ software program in the 3-D simulation model of spatial filter matrix. The key components and specifications are analyzed carefully, and new structure design and techniques are employed. The rigidity, strength, and vibration modes of the structure are analyzed using ＂ ANSYS＂ software program. The structure has been optimized by bidirectional embedding of finite element method and CAD. To seek the proof for the equipment structural flexibility, it has been tested with a slight shock to check the components and units, which has significant influence on the structure stability.