高功率掺镱光纤振荡器:研究现状与发展趋势  

High-Power Ytterbium-Doped Fiber Laser Oscillator:Current Situation and Future Developments

作　　者：王小林[1,2,3] 张汉伟 杨保来[1,2,3] 奚小明 王鹏 史尘 王泽锋[1,2,3] 周朴 许晓军 陈金宝 Wang Xiaolin;Zhang Hanwei;Yang Baolai;Xi Xiaoming;Wang Peng;Shi Chen;Wang Zefeng;Zhou Pu;Xu Xiaojun;Chen Jinbao(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha Hunan 410073 China;State Key Laboratory of Pulsed Power Laser Technology,Changsha Hunan 410073 China;Hunan Provincial Key Laboratory of High Energy Laser Technology,Changsha Hunan 410073 China)

机构地区：[1]国防科技大学前沿交叉学科学院,湖南长沙410073 [2]脉冲功率激光技术国家重点实验室,湖南长沙410073 [3]高能激光技术湖南省重点实验室,湖南长沙410073

出　　处：《中国激光》2021年第4期54-72,共19页Chinese Journal of Lasers

基　　金：国家自然科学基金(61735007)。

摘　　要：近年来,高功率掺镱光纤振荡器的输出功率和光束质量不断提升,在工业、科研等领域得到了越来越广泛的应用。目前,多模掺镱光纤振荡器的输出功率已经突破17.5kW,近单模光纤振荡器输出功率已经突破8kW。本文对掺镱光纤振荡器在科研和工业领域的研究现状进行详细介绍,分析掺镱光纤振荡器未来的发展趋势;对进一步提升掺镱光纤振荡器功率和光束质量的各项关键技术进行剖析,给出了万瓦级近单模高功率掺镱光纤振荡器的技术方案,以期为更高功率光纤振荡器的发展提供技术参考。Significance In recent years,with the continually improved power and beam quality of the high-power Ytterbium-doped fiber laser oscillator,laser oscillators are being extensively used in industry,scientific research,and other areas.Compared with the master oscillator power amplification(MOPA)fiber laser configuration,fiber laser oscillators hold the advantages of compact volume,easy control logic,low cost,anti-reflection,and high stability.With the development of fiber components and processing technology,the output power and beam quality of fiber laser oscillators will improve,and may be used instead of the MOPA fiber laser in the future.Progress In scientific research,early in 2012,the Alfalight company reported all fiber laser oscillators with output power of 1 kW.Since then,the output power of the laser oscillator continued to increase every year and increased a lot in the last two years.In 2014,the Coherent company reported single-mode fiber laser with power of 3 kW in spatial structure.Soon,Laserline Gmbh reported 17.5 kW multi-mode fiber laser in spatial structure in 2019(Fig.2).Compared with the oscillators in spatial structure,all fiber laser oscillators got more attention by the researchers.After 2016,many institutions studied single-mode laser oscillators in detail,and the output power increased from2 kW in 2015 to 8 kW in 2020.In 2020,Fujikura reported the highest single-mode,all-fiber laser oscillator with output power of 8 kW(Fig.9).In our group,we are studying laser oscillator from 2010.In 2012—2020,we also demonstrated all-fiber laser oscillators with output power from 1 kW to 6 kW(Fig.6).In 2010,the CoreLase company launched the fiber laser oscillator product with output power of 1 kW.After5 years,the CoreLase company launched a 2 kW laser oscillator product.In 2015,Maxphotonics company in China also launched a 1.5 kW laser oscillator product in cooperation with our group.Since 2017,a lot of laser companies such as Lumentum,GW laser,Reci laser,Feibo Laser,and DK laser launched fiber laser oscil

关 键 词：光纤激光器 光纤振荡器 非线性效应 模式不稳定性 功率提升 

分 类 号：O436[机械工程—光学工程]