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Journal Articles Journal of Optoelectronics and Advanced Materials Year : 2010

Simulation of ultrashort double pulse laser ablation of metals

K. V. Khishchenko
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Pavel Levashov
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A. Zakharenkov
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Sylvie de Falco
  • Function : Author
Tatiana Itina

Abstract

We perform a hydrodynamic simulation of laser ablation of metals to explain the results of recent experiments with subpicosecond double pulses (2  2 J/cm2). In the experiments, the time delay del between the pulses varies from 0.1 ps to 200 ps. When the delay is much shorter than the electron-ion relaxation time ei (delay << ei) the crater depth is the same as for a single pulse of energy 4 J/cm2. For the intermediate delays (delay ~ ei) the crater depth monotonically drops. For the long delay delay >> ei the crater depth corresponds to that obtained with a single pulse. The results of the hydrodynamic two-temperature simulations performed with realistic absorption and multiphase equation of state explain the observed behavior.
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Dates and versions

ujm-00472026 , version 1 (09-04-2010)

Identifiers

  • HAL Id : ujm-00472026 , version 1

Cite

M. E. Povarnitsyn, K. V. Khishchenko, Pavel Levashov, A. Zakharenkov, Jörg Hermann, et al.. Simulation of ultrashort double pulse laser ablation of metals. Journal of Optoelectronics and Advanced Materials, 2010, 12 (3), pp.674-676. ⟨ujm-00472026⟩
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