100 W all fiber picosecond MOPA laser
100 W all fiber picosecond MOPA laser
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100W全光纤皮秒MOPA激光器
DOI：
10.1364/oe.17.024008
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发表时间：
2009-12-21
期刊：
影响因子：
3.8
通讯作者：
Liu, Ze-Jin
中科院分区：
文献类型：
--
作者：
Chen, Sheng-Ping;Chen, Hong-Wei;Liu, Ze-Jin
一种高功率皮秒激光器采用全光纤主振荡器功率放大器（MOPA）结构构建。种子源是一个由半导体可饱和吸收镜（SESAM）被动锁模的掺镱单模光纤激光器。它产生平均功率为20毫瓦、脉冲宽度为13皮秒、重复频率为59.8兆赫的激光。对该种子源直接进行放大，在仅10瓦的功率水平下就会出现明显的非线性效应，从而导致严重的光谱展宽。为了避免这些非线性效应，我们在放大之前通过一个自制的全光纤装置将重复频率提高到约478兆赫。最终输出的激光平均功率为96瓦，脉冲宽度为16皮秒，光束质量M²小于1.5，光转换效率为61.5%。（C）2009美国光学学会
A high power picosecond laser is constructed in an all fiber master oscillator power amplifier (MOPA) configuration. The seed source is an ytterbium-doped single mode fiber laser passively mode-locked by a semiconductor saturable absorber mirror (SESAM). It produces 20 mW average power with 13 ps pulse width and 59.8 MHz repetition rate. A direct amplification of this seed source encounters obvious nonlinear effects hence serious spectral broadening at only ten watt power level. To avoid these nonlinear effects, we octupled the repetition rate to about 478 MHz though a self-made all fiber device before amplification. The ultimate output laser exhibits an average power of 96 W, a pulse width of 16 ps, a beam quality M-2 of less than 1.5, and an optical conversion efficiency of 61.5%. (C) 2009 Optical Society of America