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  • Localized measurement of a sub-nanosecond shockwave pressure rise time
    Petelin, Jaka ...
    In a growing number of applications fast and localized pressure measurement in aqueous media is desired. To perform such measurements a custom made single-mode fiber optic probe hydrophone (FOPH) was ... designed and used to measure the pressure pulse generated by laser induced breakdown in water. The sensor enabled sub-nanosecond pressure rise time measurement. Both the rise time and the duration of the shockwave were found to be shorter in the direction perpendicular to the breakdown generating laser beam, compared to the shockwave observed in the parallel direction. Simultaneous high-framerate imaging was used to qualitatively validate the novel hydrophone data and to observe the shockwave evolution. The measurements were performed also on pressure pulses emitted during generation of miniature (150 [micro]m diameter) laser-induced bubbles at very small distances (down to 40 [micro]m), further demonstrating the capabilities of the small-size sensor and the ability to measure locally. The results improve understanding of laser induced breakdown shockwave characteristics dependence on laser pulse energy and duration.
    Vir: IEEE transactions on ultrasonics, ferroelectrics, and frequency control. - ISSN 0885-3010 (Vol. 69, no. 1, Jan. 2022, str. 369-376)
    Vrsta gradiva - članek, sestavni del
    Leto - 2022
    Jezik - angleški
    COBISS.SI-ID - 78110211

    Povezava(-e):

    https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9548077
    Repozitorij Univerze v Ljubljani – RUL
    DOI

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