We demonstrate a nonlinearity optimization method by altering distribution of passive fibers in a dissipative-soliton mode-locked fiber laser to level up output parameters. In the numerical simulation, we found that the passive fiber segment after gain fiber characterizes the highest average B-integral among fiber segments. By reducing the length of this fiber section and keeping the total passive fiber length as constant, the output pulse energy can be effectively scaled up while maintaining a short dechirped pulse duration, resulting in boosting peak power. With this method, 37-nJ pulses are generated from a dissipative-soliton mode-locked cladding pumped ytterbium-doped single-mode fiber laser in the experiment. The pulse can be dechirped to 66 fs with 350 kW peak power. Moreover, the pulse pedestal is suppressed by a vector-dispersion compressor.

中文翻译：

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耗散孤子光纤激光器的非线性优化，用于产生峰值功率为 350 kW 的脉冲

我们通过改变耗散孤子锁模光纤激光器中无源光纤的分布来提高输出参数的水平，展示了一种非线性优化方法。在数值模拟中，我们发现增益光纤后的无源光纤段具有光纤段中最高的平均 B 积分特征。通过减少该光纤部分的长度并保持总无源光纤长度不变，可以有效地放大输出脉冲能量，同时保持较短的去啁啾脉冲持续时间，从而提高峰值功率。使用这种方法，在实验中由耗散孤子锁模包层泵浦掺镱单模光纤激光器产生 37-nJ 脉冲。脉冲可以衰减到 66 fs，峰值功率为 350 kW。而且，