超短脉冲
激光阈值
孤子
激光器
物理
瞬态(计算机编程)
级联
振荡(细胞信号)
脉搏(音乐)
极化(电化学)
非线性系统
放松(心理学)
光学
量子力学
计算机科学
化学
社会心理学
探测器
操作系统
生物化学
物理化学
色谱法
心理学
作者
Xueming Liu,Xiaoyan Yao,Yudong Cui
标识
DOI:10.1103/physrevlett.121.023905
摘要
Real-time spectroscopy access to ultrafast fiber lasers opens new opportunities for exploring complex soliton interaction dynamics. Here, we have reported the first observation, to the best of our knowledge, of the entire buildup process of soliton molecules (SMs) in a mode-locked laser. We have observed that the birth dynamics of a stable SM experiences five different stages, i.e., the raised relaxation oscillation (RO) stage, beating dynamics stage, transient single pulse stage, transient bound state, and finally the stable bound state. We have discovered that the evolution of pulses in the raised RO stage follows a law that only the strongest one can ultimately survive and, meanwhile, the pulses periodically appear at the same temporal positions for all lasing spikes during the same RO stage (named as memory ability) but they lose such ability between different RO stages. Moreover, we have found that the buildup dynamics of SMs is quite sensitive to both the polarization state of intracavity light and the fluctuation of pump power. These results provide new perspectives into the ultrafast transient process in mode-locked lasers and the dynamics of complex nonlinear systems.
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