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介绍了全正色散掺镱锁模光纤激光种子源及光纤放大器。系统包括利用非线性偏振旋转锁模的种子源和正向抽运的放大器两部分。实验中得到了平均功率为125 m W的锁模激光种子源,其输出脉宽约为4 ps,重复频率为88.3 MHz。经过放大器放大后,平均功率达到3.5 W,脉宽为7.2 ps,单脉冲能量为39.64 n J。
An all-positive dispersion Ytterbium-doped mode-locked fiber laser seed source and optical fiber amplifier are introduced. The system consists of a seed source that uses non-linear polarization rotation-mode-locked and a forward-pumped amplifier. In the experiment, a mode-locked laser seed source with an average power of 125 mW was obtained, with an output pulse width of 4 ps and a repetition frequency of 88.3 MHz. After amplification by the amplifier, the average power reaches 3.5 W, the pulse width is 7.2 ps and the single pulse energy is 39.64 nJ.