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Proceedings Paper

Ultrafast mode-locked frequency microcombs: fundamentals and precision metrology (Conference Presentation)
Author(s): Chee Wei Wong; Wenting Wang; Jinghui Yang; Shu-Wei Huang; Baicheng Yao; Abhinav Kumar Vinod; Hao Liu; James F. McMillan; Xinghe Jiang; Jiagui Wu; Yoon-Soo Jang

Paper 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.

Paper Details

Date Published: 10 March 2020
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Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 1127817 (10 March 2020); doi: 10.1117/12.2540995
Show Author Affiliations
Chee Wei Wong, Univ. of California, Los Angeles (United States)
Wenting Wang, Univ. of California, Los Angeles (United States)
Jinghui Yang, Univ. of California, Los Angeles (United States)
Shu-Wei Huang, Univ. of California, Los Angeles (United States)
Baicheng Yao, Univ. of California, Los Angeles (United States)
Abhinav Kumar Vinod, Univ. of California, Los Angeles (United States)
Hao Liu, Univ. of California, Los Angeles (United States)
James F. McMillan, Univ. of California, Los Angeles (United States)
Xinghe Jiang, Univ. of California, Los Angeles (United States)
Jiagui Wu, Univ. of California, Los Angeles (United States)
Yoon-Soo Jang, Univ. of California, Los Angeles (United States)


Published in SPIE Proceedings Vol. 11278:
Ultrafast Phenomena and Nanophotonics XXIV
Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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