摘要
我们在场有模式由非线性的极化旋转并且由半导体锁住的线性洞的段脉搏纤维激光可饱和吸收器的镜子。一列 Q-switchedmode-locking cw 火车和一列锁模式的脉搏火车在实验被获得。我们在实验调查相等的快可饱和的吸收器和慢可饱和的吸收器的效果。它被发现那可饱和的吸收器镜子是足够的生产稳定的 cw 的既不非线性的极化进化效果也不一个半导体在这个实验的锁模式的脉搏。非线性的极化进化效果控制洞损失几乎雕刻脉搏；可饱和的吸收器镜子提供的半导体自我重启并且维持锁模式的操作的 thest 能力。
We present a linear-cavity stretched-pulse fibre laser and by semiconductor saturable-absorber mirrors. A with mode locking by a nonlinear polarization rotation Q-switched mode-locking cw train and a mode-locking pulse train are obtained in the experiment. We investigate the effects of the equivalent fast saturable absorber and the slow saturable absorbers in experiment. It is found that neither the nonlinear polarization evolution effect nor a semiconductor saturable absorber mirror is enough to produce the stable cw mode-locking pulses in this experiment. A nonlinear polarization evolution effect controls the cavity loss to literally carve the pulses; semiconductor saturable absorber mirrors provide the self-restarting and maintain the stability of the modelocking operation.
