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Molecular Dynamics Analysis of Ultrafast Laser Ablation

机译：超快激光烧蚀的分子动力学分析

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Laser ablation process of aluminum with the fourth harmonics of Nd:YAG laser is simulated using the modified molecular dynamics, which has been developed previously by Ohmura and Fukumoto. Scattering velocities and their angles of ablation particles are visualized using vectors. It is clarified that there are two types in laser ablation process. Distribution of scattering angles and velocities of ablation particles depends on these ablation types. Transition of the number of ablation atoms and particles also depend on the ablation types. On the other hand, it is independent of the ablation types that the scattering angles have almost normal distribution and the number of particles increases little by little during the scattering process because large ablation particles are decomposed in smaller ones.
机译：使用修改后的分子动力学模拟了Nd：YAG激光的四次谐波对铝的激光烧蚀过程，这是由Ohmura和Fukumoto先前开发的。使用矢量可以看到散射速度及其消融颗粒的角度。阐明了激光烧蚀工艺有两种类型。烧蚀颗粒的散射角和速度的分布取决于这些烧蚀类型。烧蚀原子和颗粒数目的转变也取决于烧蚀类型。另一方面，与消融类型无关，散射角几乎呈正态分布，并且在散射过程中，颗粒数量逐渐增加，因为大的消融颗粒分解成较小的颗粒。

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