强激光与粒子束2025，Vol.37Issue(6)：1-3,3.DOI:10.11884/HPLPB202537.250096
4μm以上光纤气体激光器输出功率突破10W
Fiber gas laser beyond 4 μm with output power of over 10 W
摘要
Abstract
Mid-infrared lasers hold significant application demands in fields such as medicine,communications,and national defense.In recent years,research on mid-infrared fiber lasers has attracted extensive attention worldwide.This work demonstrates a high-power mid-infrared light source at 4.16 μm utilizing HBr gas-filled anti-resonant hollow-core fiber(AR-HCF).By employing a homemade 2 μm single-frequency fiber amplifier as the pump source and utilizing the intrinsic absorption of gas molecules to achieve population inversion,we have realized over 10 W continuous wave mid-infrared output through backward gas-filling method in large-mode-area(AR-HCF).This optimized configuration simultaneously enhances the optical-to-optical conversion efficiency and effectively suppresses thermal accumulation limitations.At the maximum incident pump power of 63.8 W,the system achieves a maximum continuous output power of 10.37 W with corresponding slope efficiency of approximately 16.8%.The beam quality measurement reveals M2<1.1 at maximum power operation.This research verifies the substantial capability of fiber gas lasers to generate high-power mid-infrared radiation,providing valuable insights for advancing the development and investigation of mid-infrared fiber laser technologies.关键词
光纤激光/高功率/中红外/溴化氢/空芯光纤Key words
fiber laser/high power/mid-infrared/hydrogen bromide/hollow-core fiber分类
信息技术与安全科学引用本文复制引用
陈琪,王泽锋,周智越,马鹏飞,李炫熹,裴闻喜,吕国瑞,雷罗昊,石婧,李天宇..4μm以上光纤气体激光器输出功率突破10W[J].强激光与粒子束,2025,37(6):1-3,3.基金项目
湖南省科技创新计划项目(2021RC4027) （2021RC4027）
青年自主创新科学基金项目(ZK23-23) （ZK23-23）
