Spatio-temporal breather dynamics in microcomb soliton crystals  

作　　者：Futai Hu Abhinav Kumar Vinod Wenting Wang Hsiao-Hsuan Chin James F.McMillan Ziyu Zhan Yuan Meng Mali Gong Chee Wei Wong 

机构地区：[1]Fang Lu Mesoscopic Optics and Quantum Electronics Laboratory,University of California,Los Angeles,CA,USA [2]State Key Laboratory of Precision Measurement Technology and Instruments,Tsinghua University,Beijing,China

出　　处：《Light(Science & Applications)》2024年第11期2620-2633,共14页光（科学与应用)（英文版）

基　　金：supported by the Office of Naval Research and the Office of Naval Research MURI program,DARPA,National Science Foundation,and Lawrence-Livermore National Laboratory.

摘　　要：Solitons,the distinct balance between nonlinearity and dispersion,provide a route toward ultrafast electromagnetic pulse shaping,high-harmonic generation,real-time image processing,and RF photonic communications.Here we uniquely explore and observe the spatio-temporal breather dynamics of optical soliton crystals in frequency microcombs,examining spatial breathers,chaos transitions,and dynamical deterministic switching–in nonlinear measurements and theory.To understand the breather solitons,we describe their dynamical routes and two example transitional maps of the ensemble spatial breathers,with and without chaos initiation.We elucidate the physical mechanisms of the breather dynamics in the soliton crystal microcombs,in the interaction plane limit cycles and in the domain-wall understanding with parity symmetry breaking from third-order dispersion.We present maps of the accessible nonlinear regions,the breather frequency dependences on third-order dispersion and avoided-mode crossing strengths,and the transition between the collective breather spatio-temporal states.Our range of measurements matches well with our first-principles theory and nonlinear modeling.To image these soliton ensembles and their breathers,we further constructed panoramic temporal imaging for simultaneous fast-and slow-axis two-dimensional mapping of the breathers.In the phasedifferential sampling,we present two-dimensional evolution maps of soliton crystal breathers,including with defects,in both stable breathers and breathers with drift.Our fundamental studies contribute to the understanding of nonlinear dynamics in soliton crystal complexes,their spatio-temporal dependences,and their stability-existence zones.

关 键 词：THEORY SOLITON DYNAMICS 

分 类 号：O43[机械工程—光学工程]