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Observation of Breathing Dark Pulses in Normal Dispersion Optical Microresonators

Bao, Chengying and Xuan, Yi and Wang, Cong and Fülöp, Attila and Leaird, Daniel E. and Torres-Company, Victor and Qi, Minghao and Weiner, Andrew M. (2018) Observation of Breathing Dark Pulses in Normal Dispersion Optical Microresonators. Physical Review Letters, 121 (25). Art. No. 257401. ISSN 0031-9007. doi:10.1103/physrevlett.121.257401.

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Breathers are localized waves in nonlinear systems that undergo a periodic variation in time or space. The concept of breathers is useful for describing many nonlinear physical systems including granular lattices, Bose-Einstein condensates, hydrodynamics, plasmas, and optics. In optics, breathers can exist in either the anomalous or the normal dispersion regimes, but they have only been characterized in the former, to our knowledge. Here, externally pumped optical microresonators are used to characterize the breathing dynamics of localized waves in the normal dispersion regime. High- Q optical microresonators featuring normal dispersion can yield mode-locked Kerr combs whose time-domain waveform corresponds to circulating dark pulses in the cavity. We show that with relatively high pump power these Kerr combs can enter a breathing regime, in which the time-domain waveform remains a dark pulse but experiences a periodic modulation on a time scale much slower than the microresonator round trip time. The breathing is observed in the optical frequency domain as a significant difference in the phase and amplitude of the modulation experienced by different spectral lines. In the highly pumped regime, a transition to a chaotic breathing state where the waveform remains dark-pulse-like is also observed, for the first time to our knowledge; such a transition is reversible by reducing the pump power.

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URLURL TypeDescription Paper
Weiner, Andrew M.0000-0002-1334-8183
Alternate Title:Dark breathers in a normal dispersion optical microresonator
Additional Information:© 2018 American Physical Society. Received 8 June 2018; published 21 December 2018. This Letter was supported in part by the Air Force Office of Scientific Research (Grant No. FA9550-15-1-0211), by the DARPA PULSE program (Grant No. W31P4Q-13-1-0018) from AMRDEC, and by the National Science Foundation (Grant No. ECCS-1509578). A. F. and V. T. C. acknowledge partial support by the Swedish Research Council and the European Research Council (DarkComb Grant Agreement No. 771410). C. B. acknowledge partial support from a postdoctoral fellowship from the Resnick Institute, Caltech. We gratefully acknowledge fruitful discussions with Xiaoxiao Xue, Nail Akhmediev, Zhen Qi, and Curtis Menyuk.
Group:Resnick Sustainability Institute
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-15-1-0211
Defense Advanced Research Projects Agency (DARPA)W31P4Q-13-1-0018
Svenska Forskningsrådet FormasUNSPECIFIED
European Research Council (ERC)771410
Resnick Sustainability InstituteUNSPECIFIED
Issue or Number:25
Record Number:CaltechAUTHORS:20190109-155711201
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92184
Deposited By: Tony Diaz
Deposited On:10 Jan 2019 12:39
Last Modified:16 Nov 2021 03:47

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