Mechanisms of dual-wavelength dissipative soliton mode-locking in net-normal dispersion fiber lasers

• DOI: 10.1016/j.rinp.2022.105464
• Publication Date: 2022-03-26T01:51:14Z
• Authors: Tingting Liu; Ming Yan; Zhengru Guo; Heping Zeng
• Keywords: Zero-dispersion wavelength; Mode-Locking; Dissipative soliton

Dual-wavelength mode-locked fiber lasers have attracted great attention due to their enormous potential in facilitating dual-comb spectroscopy. However, mechanism for dual-wavelength dissipative soliton mode-locking and the intracavity dynamics are still elusive. In this paper, we construct a simple universal model numerically investigate buildup of an all-normal dispersion laser. By resolving pulses evolution interactions, find that chromatic induced pulse collision plays important role formation propagation. At chaotic stage, collision-induced energy upheaval results drastic nonlinear coupling effects, which contribute molecules. While at stable two asynchronous periodically collide, accompanying extremely intense wave generation spectral explosion. Moreover, cavity gain competition modeled optimized realize self-started pulse-splitting-free mode-locking.