Raman-Kerr frequency combs in microresonators with normal dispersion

A. V. Cherenkov, N. M. Kondratiev, V. E. Lobanov, A. E. Shitikov, D. V. Skryabin, M. L. Gorodetsky

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Abstract

We generalize the coupled mode formalism to study the generation of frequency combs in microresonators with simultaneous Raman and Kerr nonlinearities and investigate an impact of the former on the formation of frequency combs and dynamics of platicons in the regime of the normal group velocity dispersion. We demonstrate that the Raman e ect initiates generation of sidebands, which cascade further in four-wave mixing and reshape into the Raman-Kerr frequency combs. We reveal that the Raman scattering induces a strong instability of the platicon pulses associated with the Kerr e ect and normal dispersion. This instability results in branching of platicons and complex spatiotemporal dynamics.

Original languageEnglish
Pages (from-to)31148-31158
Number of pages11
JournalOptics Express
Volume25
Issue number25
Early online date29 Nov 2017
DOIs
Publication statusPublished - 11 Dec 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Cherenkov, A. V., Kondratiev, N. M., Lobanov, V. E., Shitikov, A. E., Skryabin, D. V., & Gorodetsky, M. L. (2017). Raman-Kerr frequency combs in microresonators with normal dispersion. Optics Express, 25(25), 31148-31158. https://doi.org/10.1364/OE.25.031148