Effect of intensity clamping on laser ablation by intense femtosecond laser pulses

作者：Zhi Xu, Weiwei Liu, N. Zhang, MaoLu WANG, X. N. Zhu · 发表于：Optics Express · 年份：2008 · DOI：10.1364/oe.16.003604 · 被引用次数：14 · 研究领域：Laser Material Processing Techniques、Laser-Matter Interactions and Applications、Advanced Fiber Laser Technologies

We have experimentally demonstrated that because of intensity clamping, when the laser peak power is higher than the critical power for self-focusing, further increase of the laser power cannot result in corresponding increase of the laser ablation rate of a metallic sample placed in gases. The ablation rate will finally approach a stabilized value. Also, the experimental technique implemented in our work could be potentially used to measure the self-focusing critical power and the nonlinear refractive index.