Underwater acoustic wave generation by filamentation of terawatt ultrashort laser pulses
| Autor: | Aurélien Houard, Carles Milián, Yves-Bernard André, Vytautas Jukna, André Mysyrowicz, Arnaud Couairon, Régine Guillermin, Yohann Brelet, Dominique Fattaccioli, Jean-Pierre Sessarego, Amélie Jarnac, Jérôme Carbonnel |
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| Přispěvatelé: | Interaction Laser-Matière (ILM), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique Théorique [Palaiseau] (CPHT), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Ondes et Imagerie (O&I), Laboratoire de Mécanique et d'Acoustique [Marseille] (LMA ), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), DGA Techniques Navales, Direction générale de l'Armement (DGA), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X) |
| Rok vydání: | 2016 |
| Předmět: |
Acoustics
FOS: Physical sciences 01 natural sciences law.invention 010309 optics Optics Filamentation law 0103 physical sciences 010306 general physics Physics [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] PACS: 4265Jx 4330+m 4740-x business.industry Surface acoustic wave Fluid Dynamics (physics.flu-dyn) Pulse duration Acoustic wave Physics - Fluid Dynamics Laser Ion acoustic wave Pulse (physics) Acoustic emission 13. Climate action business Optics (physics.optics) Physics - Optics |
| Zdroj: | Physical Review E Physical Review E, 2016, 93, pp.063106. ⟨10.1103/PhysRevE.93.063106⟩ Physical Review E, American Physical Society (APS), 2016, 93, pp.063106. ⟨10.1103/PhysRevE.93.063106⟩ |
| ISSN: | 2470-0053 2470-0045 |
| DOI: | 10.1103/PhysRevE.93.063106⟩ |
| Popis: | Acoustic signals generated by filamentation of ultrashort TW laser pulses in water are characterized experimentally. Measurements reveal a strong influence of input pulse duration on the shape and intensity of the acoustic wave. Numerical simulations of the laser pulse nonlinear propagation and the subsequent water hydrodynamics and acoustic wave generation show that the strong acoustic emission is related to the mechanism of superfilamention in water. The elongated shape of the plasma volume where energy is deposited drives the far-field profile of the acoustic signal, which takes the form of a radially directed pressure wave with a single oscillation and a very broad spectrum. 9 pages, 12 figures |
| Databáze: | OpenAIRE |
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