Hydrodynamic simulation of ultrashort pulse laser ablation of gold film

Dong Yu, Lan Jiang, Feng Wang, Xuesong Shi, Liangti Qu, Yongfeng Lu

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

The electron collision frequency in a hydrodynamic model was improved to match the laser energy absorbed with experimental data. The model calculation was used to investigate the ablation depth and the dependence of the threshold fluence of gold film on pulse width and wavelength. Two methods for estimating the ablation depth are introduced here with their respective scope of application. The dependence of the threshold fluence of gold film on the pulse width of the laser with a 1053 nm center wavelength agreed well with the experimental data. It was also observed that for pulses shorter than ~200 ps, the threshold fluence showed linear dependence on the logarithm of pulse width and increased with the wavelength, which was different from previous results.

Original languageEnglish (US)
Pages (from-to)1047-1052
Number of pages6
JournalApplied Physics A: Materials Science and Processing
Volume119
Issue number3
DOIs
Publication statusPublished - Jun 1 2015

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ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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