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Ablation of solids by femtosecond lasers: Ablation mechanism and ablation thresholds for metals and dielectrics

Ablation of solids by femtosecond lasers: Ablation mechanism and ablation thresholds for metals and dielectrics。本词条依据上传的论文目录整理,未对论文元数据及引用次数作独立核实。

基本信息

  • 期刊:Physics of Plasmas
  • 年份:2002
  • 引用次数(上传表记录):753
  • DOI:10.1063/1.1447555

摘要

The mechanism of ablation of solids by intense femtosecond laser pulses is described in an explicit analytical form. It is shown that at high intensities when the ionization of the target material is complete before the end of the pulse, the ablation mechanism is the same for both metals and dielectrics. The physics of this new ablation regime involves ion acceleration in the electrostatic field caused by charge separation created by energetic electrons escaping from the target. The formulas for ablation thresholds and ablation rates for metals and dielectrics, combining the laser and target parameters, are derived and compared to experimental data. The calculated dependence of the ablation thresholds on the pulse duration is in agreement with the experimental data in a femtosecond range, and it is linked to the dependence for nanosecond pulses.

来源

DOI 10.1063/1.1447555