摘要
由于受激拉曼散射(SRS)和横模模式不稳定(TMI)效应的共同制约,实现高功率输出的同时保持高光束质量存在一定的困难。基于后向同带泵浦方案,在自研30μm/250μm常规双包层掺镱光纤中实现了高功率(8.38 kW)、高光束质量(光束质量因子M^(2)为1.8)的激光输出。SRS和TMI得到了有效抑制,但功率的进一步提升受限于泵浦功率。
Achieving a high power fiber laser output while maintaining high beam quality is challenging due to the constraints of stimulated Raman scattering(SRS)and transverse mode instability(TMI).In this paper,based on a counter tandem pumping scheme,an output with a power of 8.38 kW and a high beam quality factor of M^(2)=1.8 is achieved in a homemade and conventional double-clad 30μm/250μm Yb-doped fiber.The SRS and TMI effects are effectively suppressed,but the further power increase is restricted by the available pump power.
作者
李瑞显
吴函烁
肖虎
冷进勇
周朴
Li Ruixian;Wu Hanshuo;Xiao Hu;Leng Jinyong;Zhou Pu(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,Hunan,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2022年第14期223-225,共3页
Acta Optica Sinica
基金
国家自然科学基金(62035015)
湖南省创新研究群体(2019JJ1005)。
关键词
激光器
光纤激光器
同带泵浦
后向泵浦
受激拉曼散射
横模模式不稳定
lasers
fiber lasers
tandem pumping
counter pumping
stimulated Raman scattering
transverse mode instability
