Laser-induced cavitation bubble behavior on the solid walls of different materials was experimentally investigated by focusing the pulsed laser on the wall. To examine the influence of wall reflectivity on laser-induced cavitation, high-speed observations of the bubble behavior and impulsive-force measurements were carried out on aluminum, steel, copper, and acrylic resin walls. It was found that the bubble behaviors and impulsive forces vary with the wall materials, and their behaviors depend on the wall reflectivity. Increased bubble diameter, bubble collapse time, and high impulsive force were observed on the walls with high reflectivity. This result can be due to the increased laser illumination on the highly reflective walls. This promotes the heating of liquid near the wall at the laser breakdown in the first impact on the wall, while the increased bubble diameter by this effect promotes the bubble collapse phenomenon and intensive shockwave formation, resulting in the high impulsive forces on the wall in the second impact.

通过将脉冲激光聚焦在壁上，实验研究了激光诱导空化气泡在不同材料的实体壁上的行为。为了检查壁反射率对激光诱导空化的影响，对铝、钢、铜和丙烯酸树脂壁进行了气泡行为的高速观察和冲击力测量。发现气泡行为和冲击力随壁面材料而变化，它们的行为取决于壁面反射率。在具有高反射率的壁上观察到气泡直径增加、气泡破裂时间和高冲击力。这一结果可能是由于高反射壁上的激光照射增加。这促进了壁附近液体在激光第一次撞击壁时击穿时的加热，