锁模光纤激光器的偏振同步与去同步动力学
Polarization Synchronization and Desynchronization Dynamics of Mode-locked Fiber Lasers
黄志玮 1黄千千 1黄梓楠 1李卫淅 1戴礼龙 1王明娇 1代雨泽 2王青 3闫志君 2Sergeyev Sergey 3牟成博1
作者信息
- 1. 上海大学特种光纤与光接入网重点实验室,上海 200444
- 2. 华中科技大学下一代互联网接入系统国家工程实验室,湖北 武汉 430074
- 3. 阿斯顿大学阿斯顿光子技术研究所,伯明翰 B47ET
- 折叠
摘要
基于正色散的非线性偏振旋转(NPR)锁模光纤激光器,在稳定的连续波(CW)锁模状态和复合锁模状态下分析脉冲的偏振特性.通过单一调节泵浦功率,实现稳定的CW锁模状态下耗散孤子(DS)与类噪声(NLP)两种脉冲的切换.另外,固定泵浦功率,仅调节偏振控制器(PCs)可得到由脉冲状态自发切换引起的复合锁模状态.对比分析两种锁模状态下的脉冲偏振特性,发现纵模相位锁定的同步对应于脉冲正交偏振分量的完全同步,纵模相位在同步与去同步切换状态下的复合锁模对应于脉冲正交偏振分量的部分同步.实验结果表明,纵模相位间的同步状态受脉冲正交偏振分量影响.该工作对理解锁模激光器中复杂动力学、发展稳定的激光动力学技术具有指导意义.
Abstract
In this study,using a nonlinear-polarization-rotation(NPR)mode-locked fiber laser with positive dispersion as a testbed,the polarization characteristics of the pulse are analyzed in both complete mode-locked and composite mode-locked states.The switching from dissipative soliton(DS)and noise like pulse(NLP)can be achieved by making simple modifications to the polarization controllers(PCs).Under a fixed pump power,only adjusting the PCs can obtain a composite mode-locked state caused by the spontaneous switching of pulse states.By comparing and analyzing the polarization characteristics of the pulses in the two mode-locked states,it is observed that the synchronization of the longitudinal modes corresponds to the complete synchronization of the orthogonal polarization components.Whereas,the composite mode-locked of the longitudinal modes in partial synchronization corresponds to the partial synchronization of the orthogonal polarization components.It is proved experimentally that the orthogonal polarization component controls the synchronization between the longitudinal modes.This work is of significant importance to understanding the emergence of complex dynamics in mode-locked lasers and developing stable laser dynamics technology.
关键词
锁模光纤激光器/非线性光学/非线性吸引子/光孤子/偏振Key words
mode-locked fiber laser/nonlinear optics/nonlinear attractors/optical soliton/polarization引用本文复制引用
出版年
2024
NETL
NSTL
万方数据