基于陶瓷焊接的半导体激光器合束及聚焦研究  

Research of beam combination and focusing system of laser diode applied in ceramic welding

作　　者：汪菲 唐霞辉[1] 钟理京 许成文[1] 胡千 姚巍[2] WANG Fei;TANG Xiahui;ZHONG Lijing;XU Chengwen;HU Qian;YAO Wei(School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China;Shenzhen Research Institute of Huazhong University of Science and Technology,Shenzhen 518057,China)

机构地区：[1]华中科技大学光学与电子信息学院,武汉430074 [2]深圳华中科技大学研究院,深圳518057

出　　处：《激光技术》2018年第2期282-288,共7页Laser Technology

基　　金：湖北省重大科技创新计划资助项目(2013AAC008);深圳市科技计划资助项目(JCYJ20160531194407693)

摘　　要：为了解决石油输送管道Al_2O_3陶瓷内衬管的连接问题,研制了专用的半导体激光光源用于陶瓷激光焊接。实验研究了陶瓷激光焊接所需要的半导体激光工艺参量及光束要求,采用单管空间合束、偏振合束、波长合束以及菲涅耳聚焦系统输出等方式,研制了光场分布均匀的半导体激光陶瓷焊接系统。结果表明,所设计半导体激光器偏振合束输出功率为384W,合束效率达到96.62%,经波长合束后输出功率可以超过800W,聚焦系统输出光斑均匀度为93.85%。该系统可以成功应用于不同场合的陶瓷焊接生产中,满足2mm厚度Al_2O_3陶瓷激光焊接要求。In order to solve the connection problem of Al 2O 3 ceramic lined pipe in petroleum pipeline,a special semiconductor laser light source was developed for ceramic laser welding.The technological parameters and beam requirements for ceramic laser welding were investigated experimentally.By means of single tube space beam combination,polarization beam combination,wavelength combination and Fresnel focusing system,a semiconductor laser ceramic welding system with uniform light distribution field was developed.The results show that,the output power of the polarization combination module is 384W,the beam combination efficiency is up to 96.62%.After wavelength combination,the output power can exceed 800W,and the output spot uniformity of focusing system is 93.85%.The system can be applied to ceramic welding in different occasions,and meet the requirements of Al 2O 3 ceramic laser welding with 2mm thickness.

关 键 词：激光技术 陶瓷激光焊接 半导体激光器 非相干合束 菲涅耳透镜聚焦 

分 类 号：TN248.4[电子电信—物理电子学]