Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany.
J Biomed Opt. 2010 Nov-Dec;15(6):068003. doi: 10.1117/1.3526366.
We present a high-speed photographic analysis of the interaction of cavitation bubbles generated in two spatially separated regions by femtosecond laser-induced optical breakdown in water. Depending on the relative energies of the femtosecond laser pulses and their spatial separation, different kinds of interactions, such as a flattening and deformation of the bubbles, asymmetric water flows, and jet formation were observed. The results presented have a strong impact on understanding and optimizing the cutting effect of modern femtosecond lasers with high repetition rates (>1 MHz).
我们呈现了一个关于在水中通过飞秒激光诱导光致击穿在两个空间分离区域产生的空化气泡相互作用的高速摄影分析。取决于飞秒激光脉冲的相对能量及其空间分离程度，观察到了不同种类的相互作用，例如气泡的扁平化和变形、非对称水流和射流形成。所呈现的结果对理解和优化具有高重复率（>1 MHz）的现代飞秒激光器的切割效果具有重要影响。
