Thermally guided Yb-doped fiber-rod amplifier and laser
Thermally guided Yb-doped fiber-rod amplifier and laser
复制标题
热导掺镱光纤棒放大器和激光器
DOI：
10.1007/s00340-018-7126-3
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
W. Clarkson
中科院分区：
文献类型：
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作者：
C. R. Smith;N. Simakov;A. Hemming;W. Clarkson
本文介绍了一种利用热导技术实现模式控制的热导光纤棒放大器和激光振荡器。这种功率可扩展的方法工作模式尺寸通常比传统的单模光纤大一个数量级。作为放大器，我们在1030nm处实现5 dB的小信号增益，同时保持优异的波束质量（M2 < 1.1）。在激光配置中，我们在1032.5 nm处获得了13.1 W的衍射极限（M2 < 1.1）输出功率，相对于吸收功率的斜率效率为53%。提出并验证了热导光纤棒增益介质中光束演化的预测模型。
In this paper, we describe a thermally guided fiber-rod amplifier and laser oscillator, which exploit thermal guiding to achieve mode control. This power scalable approach operates with mode sizes that are typically an order of magnitude larger than traditional single-mode fibers. Operating as an amplifier, we achieve a small-signal gain of 5 dB at 1030 nm whilst maintaining excellent beam quality (M2 < 1.1). In a laser configuration, we obtained 13.1 W of diffraction-limited (M2 < 1.1) output power at 1032.5 nm, with a slope efficiency 53% with respect to absorbed power. A model predicting beam evolution through the thermally guided fiber-rod gain medium is presented and validated.