Design of a passively mode-locking whispering-gallery-mode microlaser

Tomoki Prugger S.L. Suzuki, Ayata Nakashima, Keigo Nagashima, Rammaru Ishida, Riku Imamura, Shun Fujii, Sze Yun Set, Shinji Yamashita, Takasumi Tanabe

研究成果: Article査読

6 被引用数 (Scopus)


Ultrahigh-repetition-rate lasers will become vital light sources for many future technologies; however, their realization is challenging because the cavity size must be minimized. Whispering-gallery-mode (WGM) microresonators are attractive for this purpose since they allow the strong light–matter interaction usually needed to enable mode locking. However, the optimum parameter ranges are entirely unknown since no experiments have yet been conducted. Here, we numerically investigate pulsed operation in a toroidal WGM microresonator with gain and saturable absorption (SA) to study the experimental feasibility. We show that dispersion is the key parameter for achieving passive mode locking in this system. Moreover, the design guideline provided in this work can apply to any small resonators with gain and SA and is not limited to a specific cavity system.

ジャーナルJournal of the Optical Society of America B: Optical Physics
出版ステータスPublished - 2021 10月

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 原子分子物理学および光学


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