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Spatiotemporal mode-locking and dissipative solitons in multimode fiber lasers
Bo Cao1, Chenxin Gao1, Kewei Liu1
1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing, 100084, China.
Light, Science & Applications
|October 31, 2023
Summary
Spatiotemporal mode-locking (STML) in multimode fiber (MMF) lasers generates ultrashort pulses via spatiotemporal dissipative solitons (STDS). This review covers STML principles, dynamics, and applications in MMF lasers.
Area of Science:
- Nonlinear optics
- Laser physics
- Spatiotemporal dynamics
Background:
- Multimode fiber (MMF) lasers are advanced testbeds for nonlinear spatiotemporal physics.
- These lasers have potential applications in high energy pulse generation, precision measurement, and nonlinear microscopy.
Purpose of the Study:
- To review the principles and recent progress of spatiotemporal mode-locking (STML) in MMF lasers.
- To highlight the generation of ultrashort pulses through spatiotemporal dissipative solitons (STDS).
Main Methods:
- Introduction to the general principles of STML, focusing on dynamics with large intermode dispersion.
- Discussion of measurement techniques for STML.
- Exploration of mode field engineering in MMF lasers.
Main Results:
- Detailed explanation of spatiotemporal mode-locking (STML) as the mechanism for ultrashort pulse generation.
- Presentation of recent advancements in STML, including exotic nonlinear dynamics of spatiotemporal dissipative solitons (STDS).
Conclusions:
- STML in MMF lasers is a key mechanism for generating ultrashort pulses (STDS).
- Future perspectives are outlined to advance STML research and applications in MMF lasers.

