Open AccessSimultaneous generation and real-time observation of loosely bound solitons and noise-like pulses in a dispersion-managed fiber laser with net-normal dispersion
Author(s) -
Zhenhong Wang,
Chunyang Ma,
Yufeng Song,
Jun Liu,
Haiyong Zhu,
Yanmin Duan,
Han Zhang
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.413597
Subject(s) - dispersion (optics) , ultrashort pulse , physics , optics , pulse (music) , soliton , fiber laser , picosecond , laser , noise (video) , pulse shaping , bandwidth limited pulse , wave packet , nonlinear system , atomic physics , quantum mechanics , computer science , artificial intelligence , detector , image (mathematics)
We demonstrate the coexisting dynamics of loosely bound solitons and noise-like pulses (NLPs) in a passively mode-locked fiber laser with net-normal dispersion. The total pulse number of the single soliton bunch under the NLP operation regime almost increases linearly with increasing pump power, whereas the average pulse spacing decreases accordingly. Furthermore, pulse-to-pulse separation between adjacent soliton pulses in one soliton bunch keeps in the range of hundreds of picoseconds, which decreases from left to right with the change of time. Besides, the real-time observation has been performed by utilizing the time-stretch method, showing that each one of the loosely bound solitons on the NLP operation is actually composed of chaotic wave packets with random intensities. These findings obtained will facilitate the in-depth understanding of nonlinear pulse behaviors in ultrafast optics.