Kelleher E J R, Travers J C
Opt Lett. 2014 Mar 15;39(6):1398-401. doi: 10.1364/OL.39.001398.
By modeling giant chirped pulse formation in ultra-long, normally dispersive, mode-locked fiber lasers, we verify convergence to a steady-state consisting of highly chirped and coherent, nanosecond-scale pulses, which is in good agreement with recent experimental results. Numerical investigation of the transient dynamics reveals the existence of dark soliton-like structures within the envelope of the initial noisy pulse structure. Quasi-stationary dark solitons can persist throughout a large part of the evolution from noise to a stable dissipative soliton solution of the mode-locked laser cavity.
通过对超长、正常色散、锁模光纤激光器中巨啁啾脉冲形成进行建模，我们验证了其收敛到由高啁啾且相干的纳秒级脉冲组成的稳态，这与最近的实验结果高度吻合。对瞬态动力学的数值研究揭示了初始噪声脉冲结构包络内存在类暗孤子结构。准稳态暗孤子在从噪声到锁模激光腔稳定耗散孤子解的大部分演化过程中都能持续存在。
