现代应用物理2026，Vol.17Issue(2)：87-93,7.DOI:10.12061/j.issn.2095-6223.202507003
光纤激光器输出光纤拉锥对光束质量优化的研究
Improving Beam Quality in Fiber Lasers Through Output Fiber Tapering:Mode Filtering by a Tapered Section
摘要
Abstract
A novel method is proposed to optimize the beam quality of a fiber laser by fabricating a higher-order mode filter through tapering of the output fiber,and experimental verification is conducted.Firstly,the number of guided modes,the modal characteristics of the single-core tapered fiber,and the core mode cutoff conditions are simulated and analyzed based on the structural parameters of the laboratory fiber laser's output fiber.Subsequently,the output fiber is tapered using a tapering machine with different parameters,varying the waist diameter and taper length.Finally,the tapered fiber is spliced into the laser's output delivery fiber for power and beam quality testing.The results demonstrate that,with optimized tapering parameters,the beam quality factor(M2)is improved from 1.3 to below 1.1 at the expense of approximatedly 10％power loss,yielding a 1.3-fold increase in brightness.关键词
光纤激光器/光纤拉锥/模式滤除器/光束质量Key words
fiber laser/fiber taper/mode filter/beam quality分类
信息技术与安全科学引用本文复制引用
孙杨梅,付敏,陈杨,李智贤,陈子伦,周旋风,王泽锋..光纤激光器输出光纤拉锥对光束质量优化的研究[J].现代应用物理,2026,17(2):87-93,7.基金项目
湖南省科技创新领军人才基金资助项目(2021RC4027) （2021RC4027）
