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Localized measurement of a sub-nanosecond shockwave pressure rise timePetelin, 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.Source: IEEE transactions on ultrasonics, ferroelectrics, and frequency control. - ISSN 0885-3010 (Vol. 69, no. 1, Jan. 2022, str. 369-376)Type of material - article, component partPublish date - 2022Language - englishCOBISS.SI-ID - 78110211
Author
Petelin, Jaka |
Lokar, Žiga |
Horvat, Darja, 1963- |
Petkovšek, Rok, fizik
Topics
optical fiber sensors |
pressure measurement |
measurement by laser beam |
electric breakdown |
sonar equipment |
fiber lasers |
optical fibers |
fiber optic probe hydrophone |
pressure |
shockwave |
optični senzorji |
meritve tlaka |
laserski žarki |
vlakenski laserji |
optični laserji
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Petelin, Jaka | 35427 |
Lokar, Žiga | 37513 |
Horvat, Darja, 1963- | 10926 |
Petkovšek, Rok, fizik | 15646 |
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