Hysteresis behavior of Kerr frequency comb generation in a high-quality-factor whispering-gallery-mode microcavity

Takumi Kato, Akitoshi Chen-Jinnai, Takuma Nagano, Tomoya Kobatake, Ryo Suzuki, Wataru Yoshiki, Takasumi Tanabe

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    A numerical and experimental study of Kerr frequency comb generation in a silica toroid microcavity is presented. We use a generalized mean-field Lugiato-Lefever equation and solve it with the split-step Fourier method. We observe that a stable mode-locked regime can be accessed when we reduce the input power after strong pumping due to the bistable nature of the nonlinear cavity system used. The experimental results agree well with the results of the numerical analysis, where we obtain a low-noise Kerr comb spectrum by gradually reducing the pumping input after strong pumping. This finding complements the results obtained by a previous wavelength scanning method and clarifies the procedure for achieving mode-locked states in such high-Q microcavity systems.

    Original languageEnglish
    Article number072201
    JournalJapanese journal of applied physics
    Volume55
    Issue number7
    DOIs
    Publication statusPublished - 2016 Jul

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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