Ultrashort laser ablation of iron: molecular dynamics simulation

Semra E. Imamova; Nikolay N. Nedialkov; Peter A. Atanasov; Andreas Ruf; Peter Berger; Friedrich Dausinger

doi:10.1117/12.519512

4 November 2003 Ultrashort laser ablation of iron: molecular dynamics simulation

Semra E. Imamova, Nikolay N. Nedialkov, Peter A. Atanasov, Andreas Ruf, Peter Berger, Friedrich Dausinger

Proceedings Volume 5226, 12th International School on Quantum Electronics: Laser Physics and Applications; (2003) https://doi.org/10.1117/12.519512
Event: 12th International School on Quantum Electronics Laser Physics and Applications, 2002, Varna, Bulgaria

Abstract

Laser ablation of iron by femtosecond and picosecond pulses is investigated using molecular dynamics (MD). The electron heat conduction is taken into account in the simulations. Several stages of the ejection of the particles is determined. The compression and the subsequent relaxation of the pressure into the bulk lead to removal of large amount of the material. These processes are also accompanied with the formation of voids in the material. Two different regimes of the ablation are observed depending on the laser fluence. The estimated threshold of ablation is in good agreement with the experimental data found in the literature. The dynamics of the shock wave and the temperature distribution in the material are also obtained.

Citation Download Citation

Semra E. Imamova, Nikolay N. Nedialkov, Peter A. Atanasov, Andreas Ruf, Peter Berger, and Friedrich Dausinger "Ultrashort laser ablation of iron: molecular dynamics simulation", Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); https://doi.org/10.1117/12.519512

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