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

doi:10.7567/JJAP.55.072201

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

Department of Electronics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

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 language	English
Article number	072201
Journal	Japanese journal of applied physics
Volume	55
Issue number	7
DOIs	https://doi.org/10.7567/JJAP.55.072201
Publication status	Published - 2016 Jul

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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Hysteresis behavior of Kerr frequency comb generation in a high-quality-factor whispering-gallery-mode microcavity. / Kato, Takumi; Chen-Jinnai, Akitoshi; Nagano, Takuma; Kobatake, Tomoya; Suzuki, Ryo; Yoshiki, Wataru; Tanabe, Takasumi.

In: Japanese journal of applied physics, Vol. 55, No. 7, 072201, 07.2016.

Research output: Contribution to journal › Article › peer-review

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