Femtosecond laser-induced ablation and the ultrafast dynamics of MgO(111) surfaces

  • Shizhen Xu*
  • , Tianqing Jia
  • , Zhizhan Xu
  • , Xiaoxi Li
  • , Donghai Feng
  • , Haiyi Sun
  • , Chengbin Li
  • , Xiaofeng Wang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Single-shot laser damage of polished MgO (111) surfaces induced by 800 nm pulses at different laser pulse duration was studied by scanning electron microscopy (SEM) and time-resolved measurements of reflectivity. SEM observations after laser irradiation indicated that substantial surface fracture dominated over rapid vaporization. The linear relationship between the ablation area and the logarithm of the pulse energy provided the single-shot ablation threshold. The pump-probe technique was used to investigate the change of the reflectivity during and after laser irradiation. The results showed that the charged particle emission time was about 15 ps. The ablation mechanism was also discussed.

Original languageEnglish
Pages (from-to)1126-1129
Number of pages4
JournalGuangzi Xuebao/Acta Photonica Sinica
Volume35
Issue number8
StatePublished - Aug 2006
Externally publishedYes

Keywords

  • Ablation
  • Femtosecond laser pulse
  • Magnesia
  • Ultrafast dynamics

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