摘要
光纤熔丝效应是造成光纤激光光路损伤的主要原因,也是限制光纤激光器输出功率提升的重要瓶颈因素。针对1560 nm波段窄线宽激光器中光纤熔丝损伤效应进行了研究,从光纤熔丝效应产生的机理出发,分析产生光纤熔丝效应的条件与原因,并在输出功率为4~9.9 W范围内,针对模场直径为10.5μm的单模保偏光纤开展光纤熔丝产生验证实验,确定了发生光纤熔丝时对应的功率密度阈值为11.44 MW/cm^(2),提出了硬件限流+温度预警+优化散热的综合性方法,降低了光纤熔丝损伤产生概率,有利于提升窄线宽激光器在高功率下工作的长期稳定性。
Optical fiber fuse effect is the main cause of optical fiber laser path damage,and also an important bottleneck factor limiting the output power improvement of optical fiber laser.The optical fiber fuse damage effect in narrow line-width lasers at 1560 nm band is studied in this paper.The conditions and causes of optical fiber fuse effect from the perspective of the mechanism of optical fiber fuse effect are analyzed.And in the output power range of 4-9.9 W,for the single-mode polarization-maintaining fiber with a mode field diameter of 10.5μm,the verification experiment is carried out to determine the power density threshold corresponding to the occurrence of fiber fuses 11.44 MW/cm^(2).A comprehensive method of hardware current limiting and temperature early warning to optimize heat dissipation is proposed,which reduces the probability of fiber fuse damage,and is conducive to improving the long-term stability of narrow line-width lasers working at high power.
作者
陈炯
马明
王传清
王翔
崔索超
刘爱东
冯来
CHEN Jiong;MA Ming;WANG Chuan-qing;WANG Xiang;CUI Suo-chao;LIU Ai-dong;FENG Lai(Huazhong University of Science and Technology-Wuhan National Laboratory for Optoelectronics,Wuhan 430074,China;Beijing Institute of Applied Meteorology,Beijing 100089,China;Huazhong Institute of Electro-Optics-Wuhan National Laboratory for Optoelectronics,Wuhan 430223,China;Beijing Research Institute of Telemetry,Beijing 100076,China)
出处
《光学与光电技术》
2024年第6期13-17,共5页
Optics & Optoelectronic Technology
关键词
光纤熔丝
光纤激光
窄线宽
功率密度阈值
长期稳定性
fiber fuse
fiber laser
narrow linewidth
power density threshold
long-term stability
作者简介
陈炯(1988-),男,硕士,高级工程师,主要从事光纤放大器/激光器等方面的研究工作;通信作者:马明(1977-),男,硕士,高级工程师,主要研究方向为海洋环境探测、激光测风雷达数据处理与应用。
