Control of the acoustic waves generated by intense laser filamentation in water

Jukna, Vytautas; Albert, Sylvain; Millon, Célia; Mahieu, B.; Guillermin, Régine; Rabau, G; Fattaccioli, Dominique; Mysyrowicz, A.; Couairon, Arnaud; Houard, Aurélien

doi:10.1364/oe.453749

Cited by 9 publications

(4 citation statements)

References 26 publications

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“…A number of studies have been conducted for generation of bubbles and acoustic signals in water 34 – 38 . Potemkin and Mareev 34 observed the evolution of multiple cavitation bubbles in a single filament excited by a femtosecond laser pulse in water.…”

Section: Introductionmentioning

confidence: 99%

“…Potemkin et al 36 further investigated different regimes of filamentation and corresponding dynamics of filament-induced shock waves and micro-bubbles in water using different focusing (including aberrations), laser parameters (pulse energy), and medium properties (linear absorption). Jukna et al 37 , 38 revealed the strong influence of pulse duration on the shape and intensity of the acoustic signals generated by filamentation of ultrashort terawatt laser pulses in water, which is related to the mechanism of superfilamention in water. Nevertheless, most studies on laser-assisted bubble dynamics are investigated on single bubbles, predominantly at low laser energies (< 200 µJ).…”

Section: Introductionmentioning

confidence: 99%

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Controlling bubble generation by femtosecond laser-induced filamentation

Rao

Mooss

Mishra

et al. 2022

Sci Rep

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Femtosecond laser-induced optical breakdown in liquids results in filamentation, which involves the formation and collapse of bubbles. In the present work, we elucidate spatio-temporal evolution, interaction, and dynamics of the filamentation-induced bubbles in a liquid pool as a function of a broad spectrum of laser pulse energies (∼1 to 800 µJ), liquid media (water, ethanol, and glycerol), and the number of laser pulses. Filament attributes such as length and diameter have been demarcated and accurately measured by employing multiple laser pulses and were observed to have a logarithmic dependence on laser energy, irrespective of the medium. The size distribution of persisting microbubbles is controlled by varying the pulse energy and the number of pulses. Our experimental results reveal that introducing consecutive pulses leads to strong interaction and coalescence of the pulsating bubbles via Bjerknes force due to laser-induced acoustic field generation. The successive pulses also influence the population density and size distribution of the micro-bubbles. We also explore the size, shape, and agglomeration of bubbles near the focal region by controlling the laser energy for different liquids. The insights from this work on filamentation-induced bubble dynamics can be of importance in diverse applications such as surface cleaning, fluid mixing and emulsification, and biomedical engineering.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Controlling bubble generation by femtosecond laser-induced filamentation

Rao

Mooss

Mishra

et al. 2022

Sci Rep

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“…The sharp directivity can be explained by the fact that the plasma filament [11] in the water is not in a sphere form and when the focusing conditions are general, it is usually a long ellipsoidal ball that is composed of a series of small plasma spherical sources [8]. The filament can be regarded as a combination of several acoustic point sources, and the received signal in each direction can be calculated by the principle of superposition [12], as shown in figure 7.…”

Section: Figure 6 the Directivity Of Optoacoustic Signalmentioning

confidence: 99%

On the Reproducibility and Directionality of Underwater Laser-induced Acoustic Signal

Liu

Song

Tian

et al. 2023

J. Phys.: Conf. Ser.

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An intense laser pulse focused in water could induce plasma expansion, which can be used as an impulsive sound source. The optoacoustic underwater source is very useful in marine applications; however, the poor reproductivity and the sharp directivity of the emitted signals is a big problem. The reproductivity and directivity of the acoustic emission by laser breakdown are measured in the laboratory experiment in this paper, and the results show that the reproductivity and directivity are both direction-dependent. The measurement also shows the feasibility of improving the reproductivity and directivity by adjusting the focusing system of the laser beam.

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“…Jukna et al . 33 , 34 reported the significant impact of pulse duration on the shape and intensity of acoustic signals arising from the filamentation of ultrashort terawatt laser pulses in water. These signals were closely linked to the mechanism of super filamentation in water.…”

mentioning

confidence: 99%

Bubble dynamics and atomization of acoustically levitated diesel and biodiesel droplets using femtosecond laser pulses

Jagadale,

Deshmukh,

Hanstorp

et al. 2024

Sci Rep

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This study focuses on the bubble dynamics and associated breakup of individual droplets of diesel and biodiesel under the influence of femtosecond laser pulses. The bubble dynamics were examined by suspending the droplets in the air through an acoustically levitated setup. The laser pulse energies ranged from 25 to 1050 µJ, and droplet diameters varied between 0.25 and 1.5 mm. High-speed shadowgraphy was employed to examine the influence of femtosecond laser intensity and multiple laser pulses on various spatial–temporal parameters. Four distinct sequences of regimes have been identified, depending on early and late times: bubble creation by individual laser pulses, coalescence, bubble rupture and expansion, and droplet fragmentation. At all laser intensities, early-time dynamics showed only bubble generation, while specifically at higher intensities, late-time dynamics revealed droplet breaking. The droplet breakup is further categorized into three mechanisms: steady sheet collapse, unstable sheet breakup, and catastrophic breakup, all following a well-known ligament and secondary breakup process. The study reveals that laser pulses with high repetition rates and moderate laser energy were the optimal choice for precise bubble control and cutting.

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Control of the acoustic waves generated by intense laser filamentation in water

Cited by 9 publications

References 26 publications

Controlling bubble generation by femtosecond laser-induced filamentation

Controlling bubble generation by femtosecond laser-induced filamentation

On the Reproducibility and Directionality of Underwater Laser-induced Acoustic Signal

Bubble dynamics and atomization of acoustically levitated diesel and biodiesel droplets using femtosecond laser pulses

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