高强度激光诱导冲击过程中冲击波和空化气泡的光学观测。

Optical observation of shock waves and cavitation bubbles in high intensity laser-induced shock processes.

作者信息

Martí-López L, Ocaña R, Porro J A, Morales M, Ocaña J L

机构信息

Departamento de Láser, Asociación Industrial de Optica, Color e Imagen. Parque Tecnológico de Valencia, 46980 Valencia, España.

出版信息

Appl Opt. 2009 Jul 1;48(19):3671-80. doi: 10.1364/ao.48.003671.

DOI:10.1364/ao.48.003671

PMID:19571922

Abstract

We report an experimental study of the temporal and spatial dynamics of shock waves, cavitation bubbles, and sound waves generated in water during laser shock processing by single Nd:YAG laser pulses of nanosecond duration. A fast ICCD camera (2 ns gate time) was employed to record false schlieren photographs, schlieren photographs, and Mach-Zehnder interferograms of the zone surrounding the laser spot site on the target, an aluminum alloy sample. We recorded hemispherical shock fronts, cylindrical shock fronts, plane shock fronts, cavitation bubbles, and phase disturbance tracks.

摘要

我们报告了一项关于在纳秒持续时间的单脉冲Nd:YAG激光冲击处理水中时产生的冲击波、空化气泡和声波的时空动力学的实验研究。使用一台快速ICCD相机（2纳秒门控时间）记录目标（铝合金样品）上激光光斑位置周围区域的伪纹影照片、纹影照片和马赫-曾德尔干涉图。我们记录了半球形激波前沿、圆柱形激波前沿、平面激波前沿、空化气泡和相位扰动轨迹。