论文标题
全纤维模式锁定的ytterbium掺杂纤维激光器，具有基于非线性Kerr束清洁效果的饱和吸收剂
All-fiber mode-locked ytterbium-doped fiber laser with a saturable absorber based on nonlinear Kerr beam cleanup effect
论文作者
论文摘要
我们从理论上和实验上展示了一种新型的模式锁定的Ytterbium掺杂纤维激光器，具有基于非线性Kerr束清洁效果的饱和吸收剂。可饱和吸收剂是由2米级索引多模纤维和单模纤维段用作隔膜的。用全非正常分散纤维构型，激光产生脉冲持续时间为26.38 ps的耗散孤子脉冲，脉冲能量超过0.25 nj；输出脉冲可以外部压缩至615.7 fs。此外，该激光器的自启动模式锁定操作表现出较高的稳定性，在RF频谱中测量的信噪比为73.4 dB。
We theoretically and experimentally demonstrate a novel mode-locked ytterbium-doped fiber laser with a saturable absorber based on nonlinear Kerr beam cleanup effect. The saturable absorber was formed by a 2-m graded-index multimode fiber and a single-mode fiber segment served as a diaphragm. With an all-normal-dispersion-fiber configuration, the laser generated dissipative soliton pulses with pulse duration of 26.38 ps and pulse energy more than 0.25 nJ; output pulses could be compressed externally to 615.7 fs. Moreover, the self-starting mode-locking operation of this laser exhibited a high stability with a measured signal-to-noise ratio of 73.4 dB in the RF spectrum.
