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Microresonator frequency comb optical clock

Papp, Scott B. and Beha, Katja and Del'Haye, Pascal and Quinlan, Franklyn and Lee, Hansuek and Vahala, Kerry J. and Diddams, Scott A. (2014) Microresonator frequency comb optical clock. Optica, 1 (1). pp. 10-14. ISSN 2334-2536. doi:10.1364/OPTICA.1.000010.

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Optical frequency combs serve as the clockwork of optical clocks, which are now the best time-keeping systems in existence. The use of precise optical time and frequency technology in various applications beyond the research lab remains a significant challenge, but one that integrated microresonator technology is poised to address. Here, we report a silicon-chip-based microresonator comb optical clock that converts an optical frequency reference to a microwave signal. A comb spectrum with a 25 THz span is generated with a 2 mm diameter silica disk and broadening in nonlinear fiber. This spectrum is stabilized to rubidium frequency references separated by 3.5 THz by controlling two teeth 108 modes apart. The optical clock’s output is the electronically countable 33 GHz microcomb line spacing, which features stability better than the rubidium transitions by the expected factor of 108. Our work demonstrates the comprehensive set of tools needed for interfacing microcombs to state-of-the-art optical clocks.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Lee, Hansuek0000-0002-0748-7662
Vahala, Kerry J.0000-0003-1783-1380
Diddams, Scott A.0000-0002-2144-0764
Additional Information:It is a contribution of the U.S. government (NIST) and is not subject to copyright in the United States of America. Received 4 April 2014; revised 16 June 2014; accepted 17 June 2014 (Doc. ID 209505); published 22 July 2014. We thank Elizabeth Donley and Andrew Ludlow for thoughtful comments on this manuscript and M. Hirano for supplying the HNLF. Funding Information: Defense Advanced Research Projects Agency (DARPA) (PULSE, QuASAR), National Aeronautics and Space Administration (NASA), Air Force Office of Scientific Research (AFOSR) and Kavli NanoScience Institute at Caltech.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Kavli Nanoscience InstituteUNSPECIFIED
Issue or Number:1
Classification Code:OCIS codes: (140.3945) Microcavities; (190.4410) Nonlinear optics, parametric processes; (230.4910) Oscillators
Record Number:CaltechAUTHORS:20140723-154440368
Persistent URL:
Official Citation:S. Papp, K. Beha, P. Del?Haye, F. Quinlan, H. Lee, K. Vahala, and S. Diddams, "Microresonator frequency comb optical clock," Optica 1, 10-14 (2014).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47443
Deposited By: George Porter
Deposited On:23 Jul 2014 23:01
Last Modified:10 Nov 2021 17:39

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