Periodic surface structures induced by femtosecond laser single pulse and pulse trains on metals

Jun Xie, Feng Wang, Lan Jiang, Liangliang Zhao, Yongfeng Lu

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

We experimentally investigate the formation of nanostructures on the surfaces of aluminum and copper with femtosecond laser single pulse and pulse trains. Subwavelength ripples were obtained on the surface of aluminum. The ripples' period gradually increases as the laser pulse fluence increases. With a single pulse ablation of copper, interlaced ripple structures formed on the wall of the crater when the laser pulse number is 2000, the reason for interlaced ripple formation is also discussed. A large scale of ripple structures formed by using a femtosecond laser single pulse and pulse trains to scan copper. We suggest that a pulse train is more effective in obtaining high quality ripple structures compared with a femtosecond laser single pulse.

Original languageEnglish (US)
Article number056103
JournalLaser Physics
Volume25
Issue number5
DOIs
Publication statusPublished - May 1 2015

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Keywords

  • femtosecond laser
  • metal
  • pulse train
  • surface structures

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Condensed Matter Physics
  • Industrial and Manufacturing Engineering

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