All-precision-machining fabrication of ultrahigh-Q crystalline optical microresonators

Shun Fujii, Yuka Hayama, Kosuke Imamura, Hajime Kumazaki, Yasuhiro Kakinuma, Takasumi Tanabe

研究成果: Article

抜粋

The development of ultrahigh-quality-factor (Q) microresonators has been driving such technologies as cavity quantum electrodynamics (QED), high-precision sensing, optomechanics, and optical frequency comb generation. Here we report ultrahigh Q crystalline microresonator fabrication with a Q exceeding 108, for the first time to our knowledge, achieved solely by computer-controlled ultraprecision machining. Our machining fabrication method readily achieves the dispersion engineering and size control of manufactured devices via programmed machine motion, both of which were not possible with the conventional manual polishing method. We can achieve an ultrahigh Q without the need for subsequent careful polishing that is generally required to ensure that surface integrity is maintained. We carefully addressed the cutting condition and crystal anisotropy to overcome the large surface roughness that has thus far been the primary cause of the low Q in the machining process. Our result paves the way for a reliable fabrication with a view to various photonic applications utilizing ultrahigh-Q crystalline microresonators.

元の言語English
ページ(範囲)694-701
ページ数8
ジャーナルOptica
7
発行部数6
DOI
出版物ステータスPublished - 2020 6 20

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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