发表机构
Wuhan National Laboratory for Optoelectronics; School of Optical and Electronic Information, Huazhong University of Science and Technology; Hubei Optical Fundamental Research Center; Optics Valley Laboratory（武汉光电国家实验室; 华中科技大学光学与电子信息学院; 湖北省光学基础研究中心; 光谷实验室）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究提出并演示了一种由模分复用赋能的新型拓扑时空锁模光纤激光器，可精确控制时空孤子，其形成的拓扑时空晶格能产生稳定孤子，还为探索相关物理提供了宝贵平台。
AI 中文摘要
在光学和玻色-爱因斯坦凝聚中实现鲁棒的高维孤子仍是一项重大挑战，原因在于不可预测的高阶扰动。本文提出并演示了一种由模分复用赋能的新型拓扑时空锁模光纤激光器，用于精确控制时空孤子。通过在各横向模路径间引入时间延迟，在多模腔内形成拓扑时空晶格，进而激发周期性时空孤子。这些孤子对扰动具有稳定性，归因于非互易耗散耦合相互作用诱导的周期性势。此外，在热力学极限下，这些孤子会凝聚成嵌套型时空孤子，这一现象类似于物质波的玻色-爱因斯坦凝聚。研究结果表明，拓扑时空锁模激光器不仅构成了鲁棒时空光子弹的可控光源，还为探索非线性高维孤子动力学和非厄米拓扑物理学提供了宝贵平台。
英文摘要
Achieving robust high-dimensional solitons both in optics and Bose-Einstein condensates remains a great challenge, due to unpredictable high-order perturbations. Here we propose and demonstrate a novel topological spatiotemporal mode-locked fiber laser empowered by mode-division multiplexing, for precisely controlling of the spatiotemporal solitons. By introducing time delays between the individual transverse mode paths, a topological spatiotemporal lattice is formed in the multimode cavity, which in turn excites periodic spatiotemporal solitons. These solitons are stable against the perturbations, attributed to periodic potentials induced by the nonreciprocal dissipative coupling interactions. Moreover, under the thermodynamic limit, the solitons condense into nested-type spatiotemporal solitons, a phenomenon analogous to the Bose-Einstein condensate of matter waves. Our results indicate that topological spatiotemporal mode-locked lasers not only constitute a controllable source of robust spatiotemporal light bullets, but also provide a valuable platform for exploring nonlinear high-dimensional soliton dynamics and non-Hermitian topological physics.
Comments45 pages, 22 figures. This preprint is also available on Research Square (DOI: 10.21203/rs.3.rs-8547104/v1, web:https://www.researchsquare.com/article/rs-8547104/v1)
