Cascading cavitation bubble, induced by microsecond laser
Oleg I. Pokhodyaev1, Nikita P. Kryuchkov1, Arsen K. Zotov2, Kseniya A. Feklisova2, Kirill I. Zaytsev2, Egor V. Yakovlev1; 1Bauman Moscow State Technical University, Moscow, Russia; 2Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
Abstract
Modern surgery necessitates delicate and precise tools and techniques. Consequently, the development of novel laser surgical systems is of high relevance. One promising approach is a laser cavitation system. This work presents a cascade mode of laser cavitation, which is initiated by exciting a light-absorbing liquid with a sequence of microsecond laser pulses. The formation and evolution of a cavitation bubble in a liquid that simulates the optical properties of biological tissues were experimentally investigated. The cavitation process was recorded using a high-speed camera with a frame rate of up to 75,000 FPS. Furthermore, the acoustic response from the bubble collapse was registered. Numerical simulations of the bubble formation and growth processes were also performed. This combined approach aims to enhance the understanding of the physics underlying laser cavitation. Keywords: laser cavitation, cascade cavitation, microsecond laser
Speaker
Oleg I. Pokhodyaev
Bauman Moscow State Technical University, Moscow, Russia
Russia
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