1.Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
2.Russell Centre for Advanced Lightwave Science, Shanghai Institute of Optics and Fine Mechanics and Hangzhou Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
3.State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics CAS, Shanghai 201800, China
4.Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
Wenbin He (wenbin.he@r-cals.com)
Meng Pang (pangmeng@siom.ac.cn)
收稿日期:2024-07-02,
修回日期:2024-12-02,
录用日期:2024-12-24,
网络出版日期:2025-02-02,
纸质出版日期:2025-03-31
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Retiming dynamics of harmonically mode-locked laser solitons in a self-driven optomechanical lattice[J]. LSA, 2025,14(3):703-712.
Wang, X. C. et al. Retiming dynamics of harmonically mode-locked laser solitons in a self-driven optomechanical lattice. Light: Science & Applications, 14, 703-712 (2025).
Retiming dynamics of harmonically mode-locked laser solitons in a self-driven optomechanical lattice[J]. LSA, 2025,14(3):703-712. DOI: 10.1038/s41377-024-01736-3.
Wang, X. C. et al. Retiming dynamics of harmonically mode-locked laser solitons in a self-driven optomechanical lattice. Light: Science & Applications, 14, 703-712 (2025). DOI: 10.1038/s41377-024-01736-3.
Harmonic mode-locking
realized actively or passively
is an effective technique for increasing the repetition rate of ultrafast lasers. It is critically important to understand how a harmonically mode-locked pulse train responds to external perturbations and noise
so as to make sure that it is stable and resistant to noise. Here
in a series of carefully designed experiments
we elucidate the retiming dynamics of laser pulses generated in a soliton fiber laser harmonically mode-locked at GHz frequencies to the acoustic resonance in a photonic crystal fiber (PCF) core. We characterize the self-driven optomechanical lattice
which is distributed along the PCF and provides the structure that supports harmonic mode-locking
using a homodyne setup. We reveal that
after an abrupt perturbation
each soliton in the lattice undergoes damped oscillatory retiming within its trapping potential
while the retiming is strongly coupled to soliton dissipation. In addition
we show
through statistical analysis of the intra-cavity pulse spacing
how the trapping potentials are effective for suppressing timing jitter. The measurements and the theory developed in this work lay the groundwork for studies of the general stability and noise performance of harmonically mode-locked lasers as well as providing valuable insight into generic multi-pulse phenomena in mode-locked lasers.
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