Suzuki Masayuki, Boyraz Ozdal, Asghari Hossein, Trinh Paul, Kuroda Hiroto, Jalali Bahram
Opt Lett. 2018 Apr 15;43(8):1862-1865. doi: 10.1364/OL.43.001862.
Experimentally, we demonstrate, to the best of our knowledge, the first observation of periodic spectrum changing via soliton explosion in a passively mode-locked fiber laser by a nonlinear polarization evolution. Using time stretch to capture 7220 consecutive single-shot spectra over a 100 μs time window in real time, the soliton explosions appear in a transition between two different mode-locking states. Simultaneous measurements of spectrum and pulse energy at three different output points in the laser cavity show that the soliton explosion's dynamics are related to residual dispersion. This study improves the understanding of pulse formation and evolution in the unstable mode-locking regime of lasers.
据我们所知，通过实验，我们首次证明了在被动锁模光纤激光器中，通过非线性偏振演化，孤子爆炸会导致周期性光谱变化。利用时间拉伸在100微秒的时间窗口内实时捕获7220个连续的单次光谱，孤子爆炸出现在两种不同锁模状态之间的转变过程中。在激光腔内三个不同输出点同时测量光谱和脉冲能量，结果表明孤子爆炸的动力学与残余色散有关。这项研究增进了我们对激光器不稳定锁模状态下脉冲形成和演化的理解。
