Nonlinear synchronization through vector subharmonic entrainment.

IF 5.5 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Communications Physics Pub Date : 2026-01-01 Epub Date: 2026-01-21 DOI:10.1038/s42005-026-02509-7

Dmitrii Stoliarov, Sergey Sergeyev, Hani Kbashi, Fan Wu, Qianqian Huang, Chengbo Mou

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引用次数: 0

Abstract

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.

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通过矢量次谐波夹带的非线性同步。

同步是支撑各种自然过程的普遍现象，在控制工程和光子学中有直接应用。在几种同步机制中，次谐波夹带（SHE）是一种非线性同步现象，其中振荡器锁定在振荡器频率的一小部分的外部驱动器上。虽然标量耦合的SHE机制已经被很好地理解，并在超快激光脉冲的稳定中得到了应用，但具有矢量耦合的SHE的潜力仍未被探索。在这项工作中，我们使用被动锁模光纤激光器作为测试平台来演示矢量SHE （VSHE）。我们揭示了矢量SHE的机制，在矢量SHE中，微弱的外部信号可以通过矢量耦合夹带激光内部动力学。矢量SHE以锁模驱动振荡的次谐波与连续波（CW）信号之间的同步形式呈现，连续波信号呈极化演化状态。该连续波信号由注入信号的内部动力学驱动，导致频率比为10倍的VSHE，导致部分模式锁定状态运行。我们的发现提供了新的模式锁定控制技术和额外的维度，如极化状态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Communications Physics Physics and Astronomy-General Physics and Astronomy

CiteScore

8.40

自引率

3.60%

发文量

276

审稿时长

13 weeks

期刊介绍： Communications Physics is an open access journal from Nature Research publishing high-quality research, reviews and commentary in all areas of the physical sciences. Research papers published by the journal represent significant advances bringing new insight to a specialized area of research in physics. We also aim to provide a community forum for issues of importance to all physicists, regardless of sub-discipline. The scope of the journal covers all areas of experimental, applied, fundamental, and interdisciplinary physical sciences. Primary research published in Communications Physics includes novel experimental results, new techniques or computational methods that may influence the work of others in the sub-discipline. We also consider submissions from adjacent research fields where the central advance of the study is of interest to physicists, for example material sciences, physical chemistry and technologies.