Theoretical and experimental studies on direct-liquid-cooling fiber-coiling mode control technology in high-power fiber lasers

Yin Lu; Yan Mingjian; Han Zhigang; Shen Hua; Zhu Rihong

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Theoretical and experimental studies on direct-liquid-cooling fiber-coiling mode control technology in high-power fiber lasers

机译：高功率纤维激光器直接液冷纤维 - 卷绕模式控制技术的理论与实验研究

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We present a direct-liquid-cooling fiber-coiling mode control technology to flexibly and effectively control the output beam quality of high-power fiber lasers. For theoretical guidelines, we propose a theoretical model of the fiber-coiling mode control method based on the bend loss estimated using the beam propagation method. The model is used to analyze the effects of fiber-coiling methods and fiber laser parameters on fiber-coiling mode control. Based on a theoretical analysis, we constructed two master oscillator power amplifiers with 20/400 and 25/400 fibers, respectively, to carry out experiments. The results demonstrate the accuracy of the theoretical model and the effectiveness of the direct-liquid-cooling fiber-coiling method in controlling the output beam quality. (C) 2019 Optical Society of America

机译：我们提出了一种直接液体冷却纤维卷绕模式控制技术，可灵活，有效地控制大功率光纤激光器的输出光束质量。对于理论准则，我们提出了一种基于使用光束传播方法估计的弯曲损耗的纤维卷绕模式控制方法的理论模型。该模型用于分析光纤卷积方法和光纤激光参数对光纤卷绕模式控制的影响。基于一个理论分析，我们构建了两个主振荡器功率放大器，分别为20/400和25/400纤维，进行实验。结果证明了理论模型的准确性和直接液体冷却纤维卷绕方法控制输出光束质量的有效性。（c）2019年光学学会

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来源
《Applied optics》 |2019年第6期|共10页
作者
Yin Lu; Yan Mingjian; Han Zhigang; Shen Hua; Zhu Rihong;
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作者单位

Nanjing Univ Sci &

Technol Sch Elect Engn &

Optoelect Technol Nanjing 210094 Jiangsu Peoples R China;

Nanjing Univ Sci &

Technol MIIT Key Lab Adv Solid Laser Nanjing 210094 Jiangsu Peoples R China;

Nanjing Univ Sci &

Technol MIIT Key Lab Adv Solid Laser Nanjing 210094 Jiangsu Peoples R China;

Nanjing Univ Sci &

Technol MIIT Key Lab Adv Solid Laser Nanjing 210094 Jiangsu Peoples R China;

Nanjing Univ Sci &

Technol Sch Elect Engn &

Optoelect Technol Nanjing 210094 Jiangsu Peoples R China;

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Theoretical and experimental studies on direct-liquid-cooling fiber-coiling mode control technology in high-power fiber lasers

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