.png){kind=icon}
返回
Nonlinear synchronization through vector subharmonic entrainment
.png){kind=icon}
OA
AI
DOI：10.1038/s42005-026-02509-7.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Synchronization is a universal phenomenon underpinning various natural processes and finds direct application in control engineering and photonics. Among several synchronization mechanisms, subharmonic entrainment (SHE) is a nonlinear synchronization phenomenon where an oscillator locks to an external drive with a fraction of the oscillator’s frequency. While its mechanism is well understood for scalar couplings and finds application in the stabilization of ultrafast laser pulses, the potential of SHE with vectorial coupling is still unexplored. In this work, we demonstrate vector SHE (VSHE) using a passively mode-locked fiber laser as a testbed. We unveil the mechanism of vector SHE, in which weak external signals can entrain internal laser dynamics through vector coupling. Vector SHE presents in the form of synchronization between the subharmonic of mode-locking-driven oscillations and continuous wave (CW) signal with an evolving state of polarization. This CW signal, driven by the internal dynamics of the injected signal, causes VSHE with the frequencies’ ratios of multiples of ten, resulting in a partially mode locking regime operation. Our findings offer new control techniques over mode-locking and additional dimension such as polarization states. Subharmonic entrainment (SHE) is a nonlinear synchronization phenomenon where an oscillation locks to an external periodic driving with a fraction of the oscillator frequency. This work introduces Vector Subharmonic Entrainment, demonstrating how the polarization of weak external signals can entrain internal fiber laser dynamics, offering control over mode-locking and polarization states.
期刊
IF:
5.8
论文数:
2.8K
被引数:
9.2K
机构
引用论文
暂无论文信息