High mechanical quality factor of calcium fluoride (CaF2) at room temperature

Z. Yan, Li Ju, Slawomir Gras, Chunnong Zhao, David Blair

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    We present results on the room temperature mechanical quality factor of single crystal calcium fluoride (CaF2) grown by the Bridgman-Stockbarger method. Resonant mode Q-factors are measured in the frequency range 20 to 76 kHz using tungsten wire loop suspensions. In spite of indications of only moderate crystal purity, we observed 6 modes with Q-factor > 10(7), and one with Q = 4.5 x 10(7), more than an order of magnitude higher than previously reported results.
    Original languageEnglish
    Pages (from-to)189-192
    JournalEUROPEAN PHYSICAL JOURNAL : APPLIED PHYSICS
    Volume30
    Issue number3
    DOIs
    Publication statusPublished - 2005

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