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介绍了基于Nd3+:GdVO4声光调Q激光器种子源和大直径Yb双包层保偏光纤作为放大介质的高功率线偏振脉冲光纤激光器。一个工作波长为808nm的半导体激光器端面泵浦的、声光调Q的Nd3+:GdVO4激光器输出重频在20～50kHz、平均功率约3W的高光束质量的1063nm波长的激光,经过光学耦合系统和光学隔离器进入大直径Yb双包层保偏光纤作为光纤放大器的种子源,在波长为975nm的半导体激光器泵浦下,光纤放大器获得了近衍射极限的、平均功率超过20W、偏振抑制比超过14dB的高功率线偏振脉冲激光输出。
The high power linearly polarized pulsed fiber laser based on the Nd3 +: GdVO4 acousto-optic Q-switched laser seed source and the large diameter Yb double-clad PM fiber as the amplifying medium is introduced. An end-pumped, acousto-optic Q-switched Nd3 +: GdVO4 laser with an operating wavelength of 808nm end-pumped laser outputs a high beam quality 1063nm laser with a repetition rate of 20-50kHz and an average power of about 3W. After passing through the optical coupling system and optics The isolator enters the large diameter Yb double-clad PM fiber as the seed source of the fiber amplifier. The gain of the fiber amplifier is nearly diffraction limited by the semiconductor laser with a wavelength of 975nm. The average power exceeds 20W and the polarization rejection ratio exceeds 14dB High-power linearly polarized pulsed laser output.