Presentation
10 March 2020 Ultrafast mode-locked frequency microcombs: fundamentals and precision metrology (Conference Presentation)
Author Affiliations +
Abstract
In this talk, first, we describe chip-scale coherent mode-locking in microresonator frequency combs, verified by interferometric femtosecond timing jitter measurements and phase-resolved ultrafast spectroscopy. Normal dispersion sub-100-fs mode-locking is also observed, supporting by nonlinear modeling and analytics. Second we describe the noise limits in full microcomb stabilization, locking down both repetition rate and one comb line against a reference. Active stabilization improves the long-term stability to an instrument-limited residual instability of 3.6 mHz per root tau and a tooth-to-tooth relative frequency uncertainty down to 50 mHz and 2.7×10−16. Third we describe graphene-silicon nitride hybrid microresonators for tunable frequency modes, variants of soliton mode-locked states and crystals, and controllable Cerenkov radiation. Our studies provide a platform towards precision spectroscopy, frequency metrology, timing clocks, and coherent communications.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Chee Wei Wong, Wenting Wang, Jinghui Yang, Shu-Wei Huang, Baicheng Yao, Abhinav Kumar Vinod, Hao Liu, James F. McMillan, Xinghe Jiang, Jiagui Wu, and Yoon-Soo Jang "Ultrafast mode-locked frequency microcombs: fundamentals and precision metrology (Conference Presentation)", Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 1127817 (10 March 2020); https://doi.org/10.1117/12.2540995
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KEYWORDS
Mode locking

Ultrafast measurement systems

Ultrafast phenomena

Metrology

Frequency combs

Interferometry

Microresonators

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