Synchronized multi-wavelength soliton fiber laser via intracavity group delay modulation

Dong Mao, Huaqiang Wang, Heze Zhang, Chao Zeng, Yueqing Du, Zhiwen He, Zhipei Sun, Jianlin Zhao*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

31 Citations (Scopus)
35 Downloads (Pure)


Locking of longitudinal modes in laser cavities is the common path to generate ultrashort pulses. In traditional multi-wavelength mode-locked lasers, the group velocities rely on lasing wavelengths due to the chromatic dispersion, yielding multiple trains of independently evolved pulses. Here, we show that mode-locked solitons at different wavelengths can be synchronized inside the cavity by engineering the intracavity group delay with a programmable pulse shaper. Frequency-resolved measurements fully retrieve the fine temporal structure of pulses, validating the direct generation of synchronized ultrafast lasers from two to five wavelengths with sub-pulse repetition-rate up to similar to 1.26 THz. Simulation results well reproduce and interpret the key experimental phenomena, and indicate that the saturable absorption effect automatically synchronize multi-wavelength solitons in despite of the small residual group delay difference. These results demonstrate an effective approach to create synchronized complex-structure solitons, and offer an effective platform to study the evolution dynamics of nonlinear wavepackets.

Original languageEnglish
Article number6712
Number of pages8
JournalNature Communications
Issue number1
Publication statusPublished - 18 Nov 2021
MoE publication typeA1 Journal article-refereed


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