A beam-deflection probe as a method for optodynamic measurements of cavitation bubble oscillations
Petkovšek, Rok (Author), Gregorčič, Peter (Author), Možina, Janez (Author)

URLURL - Presentation file, Visit http://dx.doi.org/10.1088/0957-0233/18/9/030 This link opens in a new window

High-intensity light from a laser pulse can produce laser-induced breakdown in a liquid followed by a shock wave and the growth of a cavitation bubble. When the bubble reaches its maximum radius, the pressure of the surrounding liquid causes it to collapseč this results in bubble oscillations. The cavitation bubble's oscillations and the corresponding shock waves were measured from the deflections of a laser beam. These deflections were detected using a fast quadrant photodiode, built into the optical probe. The precise relative-positioning system and the small diameter of the beamćs waistmade it possible to detect and analyse the signals from the shock wave and the cavitation bubble. Here, we have demonstrated that a method based on abeam-deflection probe can be used to measure the fast phenomena that follow immediately after laser-induced breakdown as well as the whole dynamics of the bubble oscillations, which corresponds to a three-orders-of-magnitude larger time scale.

Keywords:optodinamika, brezdotikalne meritve, kavitacijski mehurčki, pulzni laserji, optodynamics, beam-deflection probe, non-contact measuring, cavitation bubble, shock wave, laser-induced breakdown
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 2972-2978
Numbering:Letn. 18, št. 9
ISSN on article:0957-0233
COBISS.SI-ID:10080283 Link is opened in a new window
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Record is a part of a journal

Title:Measurement science & technology
Shortened title:Meas. sci. technol.
Publisher:IOP Publishing
COBISS.SI-ID:6000901 This link opens in a new window

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