Lafouti M, Latifi H, Fathi H, Ebrahimzadeh S, Sarikhani S, Sarabi H
Appl Opt. 2019 Feb 1;58(4):729-733. doi: 10.1364/AO.58.000729.
A 472 W monolithic fiber laser, operating at 1018 nm by employing an active fiber with a low core/cladding diameter ratio of 20/400 μm, is reported in this paper. The slope efficiency and beam quality factor (M) of the fiber laser are, respectively, 49.4% and 1.17. To realize the setup, the effects of the characteristics of the experimental elements-reflectivity of the output coupling fiber Bragg grating, length of the active fiber, etc.-on the output behavior of the system have been investigated. These are the highest recorded output signal power, efficiency, and beam quality factor in monolithic 1018 nm ytterbium-doped fiber lasers using fibers with a core/cladding diameter ratio of 20/400 μm.
本文报道了一种472 W的单块光纤激光器，它通过使用纤芯/包层直径比低至20/400μm的有源光纤，工作波长为1018 nm。该光纤激光器的斜率效率和光束质量因子（M）分别为49.4%和1.17。为实现该装置，研究了实验元件特性——输出耦合光纤布拉格光栅的反射率、有源光纤的长度等——对系统输出行为的影响。这些是在使用纤芯/包层直径比为20/400μm的光纤的单块1018 nm掺镱光纤激光器中记录到的最高输出信号功率、效率和光束质量因子。
