基于权重分析的高功率激光系统参数优化设计  

Optimal design of core parameters of high-power laser systems based on weight analysis

作　　者：马娜[1] 张岩岫[1] 邢晖[1] 曲卫东[1] 王冰[1] 潘刚 MA Na;ZHANG Yanxiu;XING Hui;QU Weidong;WANG Bing;PAN Gang(63891 Unit of PLA,Luoyang 471003,China)

机构地区：[1]中国人民解放军63891部队,河南洛阳471003

出　　处：《光学精密工程》2024年第18期2763-2771,共9页Optics and Precision Engineering

基　　金：国家重点基础研究发展计划(973计划)资助项目(No.2019-JCJQ-ZD-226)。

摘　　要：文章研究了高功率激光远场传输特性,建立了衍射效应、大气湍流效应等多因素综合作用下的高功率激光远场性能通用模型,并结合外场实际应用情况,对该模型提出了一定修正建议。基于上述模型,通过定义评价指标参数权重因子,确定了高功率激光系统核心指标的设计方法与优化原则。仿真结果表明,激光光束质量和发射功率是决定远场激光功率密度水平的关键因素,其中光束质量的影响权重最高约30%~79%,需优先确定,且越接近衍射极限越好。发射口径权重值最低约4%~24%,对远场功率密度的提升效果相对有限,需综合系统其他功能如跟瞄性能进行权衡设计。最后通过实例分析,验证了指标权重因子设计的科学性,以及核心指标体系设计原则的正确性,对于高功率激光系统的工程化设计有重要的参考价值和指导意义。In this paper,we’ve made a deep research on the far-field propagation of high-power lasers,and a general far-field performance model is derived,which is concerned with multiple factors,including atmosphere turbulence,diffraction effects and etc.Meanwhile for better field application,further amendment suggestions are proposed.Based on this model,we presented the optimal design method and principles by defining index weight factors used as evaluation parameters.The simulation results indicated that both of the beam quality and output power were the key elements that influence the far-field laser irradiance,between them beam quality has a higher weight,about 30%-79%,and needed to be decided first,in fact the ideal case was that beam quality was infinitely close the the diffraction limit.The laser emission aperture weights the lowest,about 4%-24%,and does a little favour to the system performance,so it needs a trade-off design with other functions such as tracking ability.Finally,analysis of the example verify the scientificity of the index weight factors,and verify the validity of the optimal design principles,which have great reference value for engineering design of high power laser systems.

关 键 词：高功率激光 远场性能 优化设计 权重因子 

分 类 号：TP394.1[自动化与计算机技术—计算机应用技术] TH691.9[自动化与计算机技术—计算机科学与技术]