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对被动锁模光纤激光器系统谐振腔中每个器件进行建模;通过数值仿真实验研究了具有严格线性啁啾的耗散孤子在谐振腔内的演化过程;分析了腔内色散与掺镱光纤的饱和能量对耗散孤子脉宽与峰值功率特性参数的影响.仿真实验结果表明,耗散孤子的脉宽随着色散的增加而变宽,峰值功率随着色散的增加而减小.增益饱和能量对耗散孤子脉宽的影响是非单调的,在仿真实验条件下,当掺镱光纤的增益饱和能量的值为70 p J时,脉宽达到最小值,而耗散孤子的峰值功率随着增益饱和能量的增加而增加,且变化趋势几乎是线性的.
The modeling of each device in the resonator of the passively mode-locked fiber laser system was carried out. The evolution of the dissipative soliton with strict linear chirp in the resonator was studied by numerical simulation. The effects of intracavity dispersion and Ytterbium-doped fiber The effect of saturated energy on the pulse width and peak power parameters of dissipative solitons is simulated.The simulation results show that the pulse width of dissipative solitons broadens with the increase of dispersion and the peak power decreases with the increase of dispersion.The gain saturation energy The influence on the pulse width of the dissipative soliton is non-monotonic. Under the simulation conditions, the pulse width reaches the minimum when the gain saturation energy of the ytterbium-doped fiber is 70 pJ, and the peak power of the dissipative soliton increases with the gain The increase of saturated energy increases, and the change trend is almost linear.