Pulse-by-pulse optical observation of laser-irradiated thin glass substrate using oil-immersion microscopy

Yuta Yanagisawa, Shigeki Matsuo

Research output: Contribution to journalArticlepeer-review

Abstract

To study the formation mechanism of laser-induced periodic surface structures, we carried out a pulse-by-pulse optical observation of laser-induced surface morphological changes on thin glass substrates. We adopted oil-immersion microscopy, which has a higher spatial resolution than dry microscopy, and the laser was irradiated from the air side. A thin transparent substrate of coverslip was used as the sample. When a scratched coverslip was irradiated with focused subnanosecond laser pulses of 1.064 μm wavelength, periodic structures occasionally appeared in the flat region near the focus, with a period of about 0.55 μm.

Original languageEnglish
Article number010901
JournalJapanese Journal of Applied Physics
Volume61
Issue number1
DOIs
Publication statusPublished - 2022 Jan

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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