Numerical and experimental investigation of dissipative solitons in passively mode-locked fiber lasers with large net-normal-dispersion and high nonlinearity
Numerical and experimental investigation of dissipative solitons in passively mode-locked fiber lasers with large net-normal-dispersion and high nonlinearity
复制标题
大净法向色散和高非线性被动锁模光纤激光器中耗散孤子的数值和实验研究
DOI：
10.1364/oe.17.022401
复制
发表时间：
2009-12-07
期刊：
影响因子：
3.8
通讯作者：
Liu, Xueming
中科院分区：
文献类型：
--
作者：
Liu, Xueming
对具有大净正常色散和高非线性的被动锁模光纤激光器中的耗散孤子演化进行了数值研究和实验验证。提出了一个考虑非线性偏振演化和光谱滤波效应的理论模型。该模型成功地预测了激光器的多孤子演化、准矩形谱、梯形谱和非稳态等脉冲行为。数值结果表明，与脉冲呼吸略有变化的典型净色散或全正常色散光纤激光器相比，在腔内传输过程中，激光器的脉宽呼吸比大于3，光谱宽度呼吸比大于2。非线性偏振旋转机制和光谱滤波效应对脉冲的演化起着关键作用。实验观测证实了理论预测。(C)2009年美国光学学会
Dissipative soliton evolution in passively mode-locked fiber lasers with large net-normal-dispersion and high nonlinearity is investigated numerically and confirmed experimentally. I have proposed a theoretical model including the nonlinear polarization evolution and spectral filtering effect. This model successfully predicts the pulse behaviors of the proposed laser, such as the multi-soliton evolution, quasi-rectangle-spectrum profile, trapezoid-spectrum profile, and unstable state. Numerical results show that, in contrast to the typical net-or all-normal-dispersion fiber lasers with the slight variation of the pulse breathing, the breathing ratios of the pulse duration and spectral width of our laser are more than three and two during the intra-cavity propagation, respectively. The nonlinear polarization rotation mechanism together with spectral filtering effect plays the key roles on the pulse evolution. The experimental observations confirm the theoretical predictions. (C) 2009 Optical Society of America