Theoretical and experimental studies of directivity of sound field generated by pulsed laser induced breakdown in liquid water

Yanlong Shen; Feng Zhu; Li Yu

doi:10.1117/12.2011121

16 May 2013 Theoretical and experimental studies of directivity of sound field generated by pulsed laser induced breakdown in liquid water

Yanlong Shen, Feng Zhu, Li Yu

Author Affiliations +

Proceedings Volume 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012); 879614 (2013) https://doi.org/10.1117/12.2011121
Event: 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 2012, Xi'an, Shaanxi, China

Abstract

High power acoustic sources, generated by laser-induced breakdown when high power laser is focused into water, have extensive application prospects in laser medicine and ocean exploration. Combining the models of sound column and plasma disc in laser-induced breakdown generated sound field, a plasma cylinder model is established. The directivity of the sound field, and it’s characteristics are mapped and analyzed through numerical simulation, as well as theoretical analysis. An experiment is designed and performed to verify the plasma cylinder model. The experimental results, which are in a good agreement with the simulation, reveal the maximum pressure amplitude of the acoustic signals is at the direction vertical to the light propagation, and present a distinct major-lobe and minor-lobes.

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Yanlong Shen, Feng Zhu, and Li Yu "Theoretical and experimental studies of directivity of sound field generated by pulsed laser induced breakdown in liquid water ", Proc. SPIE 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 879614 (16 May 2013); https://doi.org/10.1117/12.2011121

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