摘要
为设计高功率小型化风冷型掺镱光纤激光器,利用基于ANSYS Workbench的有限元法进行了仿真计算,分析了小型化掺镱光纤激光器在自然冷却和强制风冷条件下的温度场分布。仿真数据表明,与自然冷却条件相比,激光器在强制风冷散热条件下,各部件温度显著降低,且所有光学器件的最高温度均低于其承受的最高温度,可确保激光器的稳定运行。但是在强制风冷条件下,散热器的局部温度均匀性较差,温度范围在25℃至40℃之间。这一温度不均的情况在复杂工作环境中会影响激光器的性能和寿命。为了满足小型化激光器在更复杂工作环境中的使用需求,进一步探究了热管和散热器基底厚度对激光器温度场分布的影响。经过分析,发现增加热管和选择合适的基底厚度可以显著提高激光器的散热性能,并显著改善散热器局部温度均匀性。优化后的温度范围缩小至25℃至32.78℃,且散热器温差控制在8℃以内,有效减少了因过热引起的不利影响,可提高激光器的性能和寿命。
In order to design a high-power miniaturized air-cooled ytterbium doped fiber laser,the finite element method based on ANSYS Workbench was used for simulation calculation,and the temperature field distribution of the miniaturized ytterbium doped fiber laser under natural cooling and forced air cooling conditions was analyzed.The simulation data shows that,compared with the natural cooling condition,the temperature of all components of the laser is significantly reduced under the forced air cooling cooling condition,and the maximum temperature of all optical devices is lower than the maximum temperature they bear,which can ensure the stable operation of the laser.However,under the condition of forced air cooling,the local temperature uniformity of the radiator is poor,and the temperature range is between 25 C and 40 C.This uneven temperature will affect the performance and life of the laser in a complex working environment.In order to meet the demand of miniaturized laser in more complex working environment,the influence of the thickness of heat pipe and radiator substrate on the temperature field distribution of the laser was further explored.Through analysis,it is found that increasing the heat pipe and selecting the appropriate substrate thickness can significantly improve the heatdissipation performance of the laser,and significantly improve the local temperature uniformity of the radiator.The optimized temperature range is reduced to 25C to 32.78C,and the temperature difference of the radiator is controlled within 8 C,effectively reducing the adverse effects caused by overheating,and improving the performance and life of the laser.
作者
童军军
张鹏
程永奇
TONG Jun-jun;ZHANG Peng;CHENG Yong-qi(School of Materials and Energy,Guangdong University of Technology,Guangzhou Guangdong 510000,China)
出处
《计算机仿真》
2025年第11期281-285,290,共6页
Computer Simulation
基金
小型化可变光斑焊接激光器关键技术研发(ML-YA-2022-16)。
关键词
光纤激光器
散热器基底厚度
激光器温度场分布
热仿真
Fiber laser
Heat sink substratethickness
Laser temperature field distribution
Thermal simulation
