Real-time transition dynamics and stability of chipscale dispersion-managed frequency microcombs

• 作者: Yongnan Li Shu-Wei Huang Bowen Li Hao Liu Jinghui Yang Abhinav Kumar Vinod Ke Wang Mingbin Yu Dim-Lee Kwong Hui-Tian Wang Kenneth Kin-Yip Wong Chee Wei Wong
• 来源期刊: 光：科学与应用（英文版）
• 年，卷（期）: 2020,（2）
• 所属期刊栏目: Letters
• 页码范围: 244-253
• 页数: 10页
• 语种: 英文

摘要

Femtosecond mode-locked laser frequency combs have served as the cornerstone in precision spectroscopy, all-optical atomic clocks, and measurements of ultrafast dynamics. Recently frequency microcombs based on nonlinear microresonators have been examined, exhibiting remarkable precision approaching that of laser frequency combs, on a solid-state chip-scale platform and from a fundamentally different physical origin. Despite recent successes, to date, the real-time dynamical origins and high-power stabilities of such frequency microcombs have not been fully addressed. Here, we unravel the transitional dynamics of frequency microcombs from chaotic background routes to femtosecond mode-locking in real time, enabled by our ultrafast temporal magnifier metrology and improved stability of dispersion-managed dissipative solitons. Through our dispersion-managed oscillator, we further report a stability zone that is more than an order-of-magnitude larger than its prior static homogeneous counterparts, providing a novel platform for understanding ultrafast dissipative dynamics and offering a new path towards high-power frequency microcombs.