20-W Wavelength-Tunable Picosecond Yb-Doped Fiber MOPA Source Seeded by an NPR Mode-Locked Fiber Laser
20-W Wavelength-Tunable Picosecond Yb-Doped Fiber MOPA Source Seeded by an NPR Mode-Locked Fiber Laser
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DOI：
10.1109/jphot.2014.2356511
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发表时间：
2014-09
影响因子：
2.4
通讯作者：
H. Lin;C. Guo;S. Ruan;R. Wen;June Yu;Weiqi Liu
中科院分区：
文献类型：
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作者：
H. Lin;C. Guo;S. Ruan;R. Wen;June Yu;Weiqi Liu
首次实现了一种无需任何可调谐元件的高功率波长可调谐皮秒级掺镱光纤主振荡功率放大源。利用非线性偏振旋转锁模光纤激光器的双折射滤波效应，实现了作为种子源的波长可调谐输出。通过级联单模掺Yb光纤前置放大器和两个双包层掺Yb光纤放大器，在1038.4 ~ 1060 nm波长范围内获得了21.2 W的激光输出，脉冲宽度为9.5 ps，光信噪比为25 dB，重复频率为178 MHz时光束质量M2为1.16。
We demonstrated a high-power wavelength-tunable picosecond Yb-doped fiber master oscillator power amplifier source without any tunable elements for the first time. This wavelength-tunable output was realized based on the birefringence-induced filter effect of the nonlinear polarization rotation mode-locked fiber laser, which worked as the seed source. Through cascaded single-mode Yb-doped fiber preamplifiers together with two double-cladding Yb-doped fiber amplifiers, the pulses were amplified up to 21.2-W output power in the wavelength range from 1038.4 to 1060 nm with a pulse duration of 9.5 ps, an optical signal-to-noise ratio of 25 dB, and a beam quality M2 of 1.16 at the repetition rate of 178 MHz.