小型化全光纤激光器壳体结构设计与分析  

Miniaturization design and analysis of shell structure of all-fiber laser

作　　者：李明 宋国龙 毕野 李星霖 张秀齐 王禹凝 郑权 LI Ming;SONG Guolong;BI Ye;LI Xinglin;ZHANG Xiuqi;WANG Yuning;ZHENG Quan(Changchun New Industries Optoelectronics Technology Co.Ltd.,Changchun 130103,China;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]长春新产业光电技术有限公司,长春130103 [2]中国科学院长春光学精密机械与物理研究所,长春130033

出　　处：《激光技术》2024年第4期584-589,共6页Laser Technology

基　　金：吉林省科技厅科技发展计划资助项目(20210201004GX)。

摘　　要：为了进一步优化小型化激光器的性能,在一般性原则的基础上设计了一款输出功率大于10 W、1030 nm高稳定性的小型化全光纤激光器壳体结构。壳体体积为220 mm×270 mm×75 mm,质量小于7 kg;壳体结构采用柔性支撑的减振设计,并可使激光器在温度-55℃~45℃的小型化平台下保持正常运行。利用有限元分析软件对激光器壳体进行了热分析与随机振动分析,按照设计图纸对小型化全光纤激光器样机进行了加工,并进行了实验验证。结果表明,激光器壳体在45℃下,激光器最热面温度为49.5℃,温升约为4.5℃,散热性能良好;在随机振动功率谱密度总均方根10.77 g的实验条件下,激光器最大3σ应力为171 MPa,随机振动响应均方根值仅为24.5 g,壳体结构力学性能良好;激光器壳体结构的散热性能以及力学性能完全满足设计要求,实验结果与仿真结果吻合度较高。该研究为小型化光纤激光器项目的具体实施提供了一定参考。In order to further optimize the performance of miniaturized lasers,based on general principles,an all fiber laser housing structure with output power greater than 10 W and high stability at 1030 nm was designed for miniaturization.The shell volume was 220 mm×270 mm×75 mm,and the mass was less than 7 kg.The shell structure adopted a flexible support vibration reduction design,and could maintain normal operation of the laser on a miniaturized platform with temperatures ranging from-55℃to 45℃.Thermal analysis and random vibration analysis were conducted on the laser casing using finite-element analysis software.The miniaturized all fiber laser prototype was processed according to the design drawings and experimentally verified.The results indicate that,at a temperature of 45℃,the hottest surface temperature of the laser is 49.5℃,with a temperature rise of about 4.5℃,indicating good heat dissipation performance.Under the random vibration condition of power spectrum density total root mean square 10.77 g,maximum of 3σstress of the laser is 171 MPa,and the root mean square value of the random vibration response is only 24.5 g,indicating good mechanical properties of the shell structure.The heat dissipation and mechanical properties of the laser shell structure fully meet the design requirements,and the experimental results are in good agreement with the simulation results.This study provides a certain reference for the specific implementation of miniaturized fiber laser projects.

关 键 词：激光技术 小型化光纤激光器 壳体设计 柔性支撑 热分析 随机振动分析 实验验证 

分 类 号：TN248.1[电子电信—物理电子学]