Underwater acoustic signals induced by intense ultrashort laser pulse

Yohann Brelet (1) , Amélie Jarnac (1) , Jérôme Carbonnel (1) , Yves-Bernard André (1) , André Mysyrowicz (1) , Aurélien Houard (1) , Dominique Fattaccioli (2) , Régine Guillermin (3) , Jean-Pierre Sessarego (3)

1 LOA - Laboratoire d'optique appliquée
2 CTSN - Centre Technique des Systemes Navals
3 O&I - Ondes et Imagerie

Acoustic signals generated in water by terawatt (TW) laser pulses undergoing filamentation are studied. The acoustic signal has a very broad spectrum, spanning from 0.1 to 10 MHz, and is confined in the plane perpendicular to the laser direction. Such source appears to be promising for the development of remote laser based acoustic applications.

Domaines: Optique [physics.optics]

Yohann Brelet, Amélie Jarnac, Jérôme Carbonnel, Yves-Bernard André, André Mysyrowicz, et al.. Underwater acoustic signals induced by intense ultrashort laser pulse. Journal of the Acoustical Society of America, 2015, 137, pp.EL288. ⟨10.1121/1.4914998⟩. ⟨hal-01138358⟩