High Average Power Second-Harmonic Generation of a CW Erbium Fiber MOPA
High Average Power Second-Harmonic Generation of a CW Erbium Fiber MOPA
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DOI：
10.1109/lpt.2017.2737227
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发表时间：
2017-09
影响因子：
2.6
通讯作者：
T. Runcorn;R. Murray;J. Taylor
中科院分区：
文献类型：
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作者：
T. Runcorn;R. Murray;J. Taylor
报道了在周期性极化的掺铒光纤晶体中，利用连续波铒光纤主振荡器功率放大器系统倍频，获得了28 W的780 nm近衍射极限光束质量（M2 ≤ 1.15）。二次谐波产生转换效率达到45%，没有观察到滚降，这表明进一步的功率缩放应该是可能的与更高的基本泵浦功率。产生的二次谐波具有0.10 nm的3 dB光谱带宽。所提出的架构代表了一种简单而有效的路线，以产生780 nm左右的高亮度辐射。
We report the generation of 28 W of 780 nm radiation with near diffraction limited beam quality (M2 ≤ 1.15) by frequency-doubling a continuous-wave erbium fiber master oscillator power amplifier system in a periodically poled lithium niobate crystal. The second-harmonic generation conversion efficiency reached 45% with no roll-off observed, suggesting that further power scaling should be possible with higher fundamental pump powers. The generated second-harmonic had a 3 dB spectral bandwidth of 0.10 nm. The presented architecture represents a simple and effective route to generating high-brightness radiation around 780 nm.