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Two-dimensional 'hat-scratch' periodic structures induced by a single femtosecond laser pulse on silica glass

  • Yanhua Han
  • , Shiliang Qu*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Two-dimensional 'hat-scratch' structures are fabricated on silica glass by the interference of three non-coplanar beams originating from a single femtosecond laser pulse. The scanning electron microscope (SEM) characterizations show that the as-formed structures are composed of hat holes and scratch marks. The experimental results indicate that the structures are dependent on the intensity of laser beam. The formation of the two-dimensional 'hat-scratch' structures is mainly due to the combined laser ablation effects including ionization, shock wave, plasma expansion, and phase explosion.

Original languageEnglish
Pages (from-to)7524-7528
Number of pages5
JournalApplied Surface Science
Volume255
Issue number17
DOIs
StatePublished - 15 Jun 2009
Externally publishedYes

Keywords

  • 'Hat-scratch' structure
  • Femtosecond laser
  • Interference

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