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Journal Articles Optics Express Year : 2022

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

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Abstract

Experiments and simulations are performed to study filamentation and generation of acoustic waves in water by loosely focused multi-millijoules laser pulses. When the laser pulse duration is increased from femtosecond to nanosecond duration, a transition is observed from a filamentary propagation with extended and low energy density deposition to a localized breakdown, related to high energy density deposition. The transition suggests that Kerr selffocusing plays a major role in the beam propagation dynamics. As a result, the shape, the amplitude and the spectrum of the resulting pressure wave present a strong dependence on the laser pulse duration.
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Dates and versions

hal-03600542 , version 1 (07-03-2022)

Licence

Attribution - CC BY 4.0

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V. Jukna, S. Albert, C. Millon, Benoît Mahieu, R. Guillermin, et al.. Control of the acoustic waves generated by intense laser filamentation in water. Optics Express, 2022, 30 (6), pp.9103-9111. ⟨10.1364/OE.453749⟩. ⟨hal-03600542⟩
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