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设计了一种基于偏置相移非线性环路反射镜的全保偏锁模光纤激光器。搭建了全保偏锁模振荡器系统,该系统通过二级掺镱光纤放大获得了平均功率为2.4 W、重复频率为20.3 MHz、脉冲宽度为142fs的脉冲序列输出。由于振荡器采用全保偏光纤结构,锁模具有良好的抗环境稳定性。
A fully-mode-locked mode-locked fiber laser based on a biased phase-shifted nonlinear loop mirror is designed. A full-mode polarization-mode-locked oscillator system is built. The system achieves an average power of 2.4 W, a repetition frequency of 20.3 MHz and a pulse width of 142 fs by amplifying two-stage Yb-doped optical fiber. As the oscillator with full Paul polarization fiber structure, the mold has a good anti-environmental stability.