Fabrication of whispering gallery mode cavity using crystal growth

Hiroshi Kudo, Yohei Ogawa, Takumi Kato, Atsushi Yokoo, Takasumi Tanabe

    Research output: Contribution to journalArticle

    9 Citations (Scopus)


    We developed a method for fabricating crystalline whispering gallery mode cavities based on laser-heated pedestal growth. We fabricated sapphire cavities and obtained a Q factor of 1.6 × 104 with a cavity whose radius was about 120 μm. We showed numerically that the cross sectional shape of the cavity is sensitive to the cavity Q, and we controlled it by changing the growth condition in the molten zone, without significantly degrading the crystal structure.

    Original languageEnglish
    Article number211105
    JournalApplied Physics Letters
    Issue number21
    Publication statusPublished - 2013 Jun 24

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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