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Greater than one billion Q factor for on-chip microresonators

Wu, Lue and Wang, Heming and Yang, Qifan and Ji, Qing-Xin and Shen, Boqiang and Bao, Chengying and Gao, Maodong and Vahala, Kerry (2020) Greater than one billion Q factor for on-chip microresonators. Optics Letters, 45 (18). pp. 5129-5131. ISSN 0146-9592. doi:10.1364/ol.394940.

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High optical quality (Q) factors are critically important in optical microcavities, where performance in applications spanning nonlinear optics to cavity quantum electrodynamics is determined. Here, a record Q factor of over 1.1 billion is demonstrated for on-chip optical resonators. Using silica whispering-gallery resonators on silicon, Q-factor data is measured over wavelengths spanning the C/L bands (100 nm) and for a range of resonator sizes and mode families. A record low sub-milliwatt parametric oscillation threshold is also measured in 9 GHz free-spectral-range devices. The results show the potential for thermal silica on silicon as a resonator material.

Item Type:Article
Related URLs:
URLURL TypeDescription
Wu, Lue0000-0002-7503-7057
Wang, Heming0000-0003-3861-0624
Yang, Qifan0000-0002-7036-1712
Shen, Boqiang0000-0003-0697-508X
Vahala, Kerry0000-0003-1783-1380
Additional Information:© 2020 Optical Society of America. Provided under the terms of the OSA Open Access Publishing Agreement. Received 10 April 2020; revised 13 June 2020; accepted 6 August 2020; posted 6 August 2020 (Doc. ID 394940); published 11 September 2020. The authors thank H. Lee (KAIST), J. Liu and T. Kippenberg (EPFL), K. Yang (Stanford), and M. Suh (Caltech) for helpful discussions. Funding: Defense Advanced Research Projects Agency (HR0011-15-C-055, sub-award KK1540); Air Force Office of Scientific Research (FA9550-18-1-0353); Kavli Nanoscience Institute.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)HR0011-15-C-055
Defense Advanced Research Projects Agency (DARPA)KK1540
Air Force Office of Scientific Research (AFOSR)FA9550-18-1-0353
Kavli Nanoscience InstituteUNSPECIFIED
Issue or Number:18
Record Number:CaltechAUTHORS:20201029-153228861
Persistent URL:
Official Citation:Lue Wu, Heming Wang, Qifan Yang, Qing-xin Ji, Boqiang Shen, Chengying Bao, Maodong Gao, and Kerry Vahala, "Greater than one billion Q factor for on-chip microresonators," Opt. Lett. 45, 5129-5131 (2020)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:106346
Deposited By: Tony Diaz
Deposited On:29 Oct 2020 23:06
Last Modified:16 Nov 2021 18:53

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