Animated sequence of snapshots from a large-scale three-dimensional molecular dynamics simulation of laser ablation

Laser pulse duration is 15 ps, penetration depth is 50 nm, fluence is 2.1 times the threshold fluence for the onset of ablation

Animated GIF Image

This animation shows the dynamics of a collective material ejection or ablation in the regime of stress confinement, when the laser pulse duration is shorter than the time that is needed to initiate a collective motion of molecules within the absorbing volume. A detailed discussion of the physical mechanisms leading to the material ejection and the parameters of the ejection process is given in [ L. V. Zhigilei and B. J. Garrison, Microscopic Mechanisms of Laser Ablation of Organic Solids in the Thermal and Stress Confinement Irradiation Regimes, J. Appl. Phys. 88, 1281-1298 (2000), Abstract, Full Text: PDF (800 kB) ].

To see animated snapshots from a simulation at the same fluence but with ten times longer laser pulse click here.

To see animated snapshots from a simulation with the same pulse duration but at lower laser fluence, just above the threshold for the onset of ablation, click here.

To see animated snapshots from a simulation with the same pulse duration but at lower laser fluence, below the threshold for the onset of ablation, click here.

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Leonid V. Zhigilei - July 14, 2000