Linearly polarized Q-switched pulse Yb fiber laser with average output power over 10 W
Linearly polarized Q-switched pulse Yb fiber laser with average output power over 10 W
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DOI：
10.1002/lapl.200910019
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发表时间：
2009-06
影响因子：
1.7
通讯作者：
Y. X. Wang;D. Z. Yang;P. Jiang;Y. H. Shen
中科院分区：
文献类型：
--
作者：
Y. X. Wang;D. Z. Yang;P. Jiang;Y. H. Shen
本文报道了一种具有线偏振短脉冲输出的声光调q光纤激光器。采用1米长的大模面积保偏Yb光纤作为增益介质，自由空间AO调q开关作为调制元件，构建了光纤激光器。光纤激光器由工作波长为976 nm的光纤尾纤激光二极管泵浦。通过适当调节AO调q开关与腔镜之间的距离，实现了稳定的调q短脉冲激光输出，输出功率高达10 W，重复频率在20 ~ 50 kHz之间。在重复频率为20 kHz时，当输出功率约为10 W时，脉冲持续时间最短，为33 ns。
We report an acousto-optic (AO) Q-switched fiber laser with linearly polarized short pulse output. The fiber laser was set up by applying a piece of large mode area polarization maintaining Yb fiber of 1 meter length as the gain medium and a free-space AO Q-switch as the modulating element. The fiber laser was pumped by a fiber pigtailed laser diode working at 976 nm. By suitably adjusting the distance between the AO Q-switch and the cavity mirror, stable Q-switched short pulse laser output was achieved with output power up to 10 W and repetition rate between 20 kHz and 50 kHz. The shortest pulse duration of 33 ns was achieved at repetition rate of 20 kHz when the output power reached about 10 W.