Open AccessVersatile multi-soliton patterns of noise-like pulses in a passively mode-locked fiber laser
Author(s) -
Renlai Zhou,
Xuanyi Liu,
Dejie Yu,
Qian Li,
Hong Fu
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.380328
Subject(s) - soliton , physics , fiber laser , optics , noise (video) , laser , waveform , pulse (music) , chaotic , harmonic , gaussian , mode locking , mode (computer interface) , transformation (genetics) , spectral density , fiber , nonlinear system , computer science , materials science , telecommunications , acoustics , artificial intelligence , quantum mechanics , voltage , biochemistry , chemistry , detector , image (mathematics) , gene , operating system , composite material
We experimentally report the dynamics of multi-soliton patterns noise-like pulses (NLPs) in a passively mode-locked fiber laser, which the pulse duration can be linearly tuned from 8.21 ns to 128.23 ns by 2.936 ns / 10 mW. Benefiting from the drastically strengthened nonlinear effects in the cavity and the high gain amplification in the unidirectional ring (UR), the transformation from rectangular-shaped NLP to Gaussian-shaped NLP is experimentally achieved. Versatile multi-soliton patterns are observed in NLP regime for the first time, namely, single-scale soliton clusters, high-order harmonic mode-locking, and localized chaotic multiple pulses. In particular, the spectrum evolution with pump power and spectrum stability in 2 hours are also monitored. The obtained results demonstrate the rectangular-shaped NLP can fully transform into Gaussian-shaped NLP, and the multi-soliton patterns can exist in the NLP regime, which contributes to further understanding the nature and mechanism of the NLP in a passively mode-locked fiber laser.