Research on the metal ablation thresholds of picosecond laser

Jinpeng Duan, Meng Chen*, Zhenxu Bai, Gang Li

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Detailed studies on the ablation threshold of Mo with picosecond laser pulses are reported in this paper. The laser pulses used for the research were 1064 nm in wave length and 15 ps in pulse duration. Scanning electronic microscope (SEM) and optical surface analyzer were used to analyze the ablation sample, and by analyzing the linear relationship between the squared diameter of ablation crater and pulses energy we obtained the ablation threshold of Mo with single- and multi-pulses. Influence factors of ablation threshold were observed while analyzing machining process. Finally, the shape and topography of holes drilled by percussion with ablation regularity in Mo were studied, which provided an important guidance for the following applications on picosecond micro-machining.

Original languageEnglish
Pages (from-to)547-550
Number of pages4
JournalApplied Mechanics and Materials
Volume190-191
DOIs
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • Ablation thresholds
  • Metals materials
  • Micro-machining
  • Picosecond laser

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