Selective spatiotemporal mode-locking in multimode Mamyshev oscillators
Abstract
Spatiotemporal mode-locking (STML) in multimode fibers introduces spatial degrees of freedom for ultrashort pulse generation, yet flexible manipulation of transverse mode compositions within multimode solitons remains challenging. Here, we propose a spectrum-to-mode mapping strategy in multimode Mamyshev oscillators (MOs) to selectively synchronize specific transverse modes through synergistic cross-phase modulation and offset spectral filtering. Meanwhile, four-wave mixing acts to stabilize intermodal phase relationships, facilitating selective STML characterized by diverse mode compositions with matched group velocities. Spatiotemporal solitons containing the pure LP01 mode, degenerate LP11 modes, or LP02+LP21 composite modes are selectively realized and mapped across the parameter space spanned by intracavity gain and filter detuning. Furthermore, intracavity collisions between coexisting mode groups with disparate group velocities are demonstrated to enable dynamic mode selection. Beyond the simulation of six modes in graded-index multimode fibers, selective STML is also demonstrated in MOs based on step-index multimode fibers and fibers supporting more transverse modes, confirming the generality of our approach. This strategy offers a versatile and robust pathway for transverse mode regulation and provides new insights into full dimensional structured light manipulation in multimode ultrafast fiber lasers.
Related
- Second harmonic phase locking and synchronization blockade in quadratically coupled driven quantum van der Pol oscillators
- Direction-selective triplet pairing and spin-edge locking in altermagnetic metals
- Charge-selective topological locking and ultraslow coarsening in magnetoelastic media
- Charge-Selective Displacement of Spatiotemporal Optical Vortices at a Spatially Uniform Time Boundary
- Comparative study of noise-like pulse emission from Mamyshev oscillator and conventional passively mode-locked fiber laser
BibTeX
@misc{wang2026selective,
title = {{Selective spatiotemporal mode-locking in multimode Mamyshev oscillators}},
author = {Changfeng Wang and Jia Liu and Yutai Zhao and Ran Xia and Wenjun Ni and Chunyong Yang and Xiahui Tang and Gang Xu and Perry Ping Shum},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.14690},
eprint = {2610.14690},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.14690},
}
RIS
TY - UNPB
TI - Selective spatiotemporal mode-locking in multimode Mamyshev oscillators
AU - Changfeng Wang
AU - Jia Liu
AU - Yutai Zhao
AU - Ran Xia
AU - Wenjun Ni
AU - Chunyong Yang
AU - Xiahui Tang
AU - Gang Xu
AU - Perry Ping Shum
PY - 2026
DA - 2026/10/10
PB - arXiv
DO - 10.48550/arxiv.2610.14690
UR - https://arxiv.org/abs/2610.14690
AB - Spatiotemporal mode-locking (STML) in multimode fibers introduces spatial degrees of freedom for ultrashort pulse generation, yet flexible manipulation of transverse mode compositions within multimode solitons remains challenging. Here, we propose a spectrum-to-mode mapping strategy in multimode Mamyshev oscillators (MOs) to selectively synchronize specific transverse modes through synergistic cross-phase modulation and offset spectral filtering. Meanwhile, four-wave mixing acts to stabilize intermodal phase relationships, facilitating selective STML characterized by diverse mode compositions with matched group velocities. Spatiotemporal solitons containing the pure LP01 mode, degenerate LP11 modes, or LP02+LP21 composite modes are selectively realized and mapped across the parameter space spanned by intracavity gain and filter detuning. Furthermore, intracavity collisions between coexisting mode groups with disparate group velocities are demonstrated to enable dynamic mode selection. Beyond the simulation of six modes in graded-index multimode fibers, selective STML is also demonstrated in MOs based on step-index multimode fibers and fibers supporting more transverse modes, confirming the generality of our approach. This strategy offers a versatile and robust pathway for transverse mode regulation and provides new insights into full dimensional structured light manipulation in multimode ultrafast fiber lasers.
ER -