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采用非线性薛定谔方程模拟了全正色散介质激光器中实现脉冲锁模输出的动态过程,理论表明,不同于工作于净色散为负的孤子锁模激光器以及腔内具有色散延迟线净色散为正的色散管理孤子和自相似脉冲锁模激光器,在纯正色散介质构成的锁模激光器中,增益饱和和增益窄化对形成稳定的锁模脉冲起重要的作用,在两者的作用下脉冲形成增益导引孤子.采用不同的锁模方式在纯正色散光纤锁模激光器中得到了稳定的增益导引孤子锁模,实验结果与理论模拟一致.
The nonlinear Schrödinger equation is used to simulate the dynamic process of pulse mode-locked output in all positive dispersion lasers. The theory shows that, different from the mode-locked soliton laser with negative net dispersion and the positive net dispersion of the dispersion delay line in the cavity Dispersion-managed solitons and self-similar pulsed mode-locked lasers, gain-saturation and gain-narrowing in the mode-locked lasers of purely dispersive media play an important role in the formation of a stable mode-locked pulse. Guided Solitons, a stable gain-guided soliton mode-locked in a pure dispersion fiber mode-locked laser is obtained by using different mode-locking modes. The experimental results are in agreement with the theoretical simulations.