Wang Ze, Zhu Kaixuan, Zhang Fangxing, Gong Qihuang, Yang Qi-Fan
State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China.
Peking University Yangtze Delta Institute of Optoelectronics, Nantong 226010, China.
Sci Adv. 2025 May 23;11(21):eadv9422. doi: 10.1126/sciadv.adv9422.
Coherently driven optical microresonators with Kerr nonlinearity have received intense interest since they host various nonlinear optical states including solitons and chaos. Recently, chaotic modulational instabilities (MIs)-a state far from equilibrium-have been exploited for parallel ranging and random number generation. Despite theoretical predictions suggesting unconventional wave statistics in chaotic MI, its rapidly varying temporal waveforms have prohibited direct experimental assessment. Here, we use a frequency-agile optical frequency comb to coherently interrogate the optical field within the microresonator in both temporal and spectral domains. In the chaotic regime, we observe transient events characterized by extremely high optical intensity, identified as rogue waves based on the long-tailed distribution of peak powers. Statistical analysis of many rogue wave events reveals their origin as pulse collisions. Our full-field measurement further unveils universal correlated photon transport that determines the collision process.
具有克尔非线性的相干驱动光学微谐振器自其承载包括孤子和混沌在内的各种非线性光学状态以来，受到了广泛关注。最近，混沌调制不稳定性（MIs）——一种远离平衡的状态——已被用于并行测距和随机数生成。尽管理论预测表明混沌MI中存在非常规的波统计特性，但其快速变化的时间波形阻碍了直接的实验评估。在这里，我们使用频率捷变光学频率梳在时域和频域对微谐振器内的光场进行相干探测。在混沌状态下，我们观察到以极高光强为特征的瞬态事件，基于峰值功率的长尾分布将其识别为 rogue 波。对许多 rogue 波事件的统计分析揭示了它们源于脉冲碰撞。我们的全场测量进一步揭示了决定碰撞过程的普遍相关光子传输。
