Fast wave velocity measurement by Brillouin scattering using coherent induced phonon from ScAlN piezoelectric thin film

Masahiko Kawabe, Hayato Ichihashi, Shinji Takayanagi, Mami Matsukawa, Takahiko Yanagitani, Masashi Suzuki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Brillouin scattering is a nondestructive and noncontact technique to measure local longitudinal and shear acoustic velocities in the GHz range. However, the measurements of weak scattering from thermal phonons result in the lower measurement accuracy and longer measurement time. To overcome this problem, a technique with artificially induced acoustic phonons was developed using a ScAlN film. We observed Brillouin scattering by induced longitudinal coherent phonons from ScAlN film deposited on the side surface of a silica bulk specimen. The intensity of induced acoustic phonons was experimentally studied.

    Original languageEnglish
    Title of host publication2015 IEEE International Ultrasonics Symposium, IUS 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Print)9781479981823
    DOIs
    Publication statusPublished - 2015 Nov 13
    EventIEEE International Ultrasonics Symposium, IUS 2015 - Taipei, Taiwan, Province of China
    Duration: 2015 Oct 212015 Oct 24

    Other

    OtherIEEE International Ultrasonics Symposium, IUS 2015
    CountryTaiwan, Province of China
    CityTaipei
    Period15/10/2115/10/24

    Keywords

    • Brillouin scattering
    • Induced coherent phonons
    • ScAlN

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics

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