Time-Resolved Pump–Probe Imaging of Ablation Phenomena in Silica Glass Using Visible Femtosecond Laser

E. Terasawa*, D. Satoh, T. Shibuya, Y. Moriai, H. Ogawa, M. Tanaka, K. Sakaue, M. Washio, Y. Kobayashi, R. Kuroda

*この研究の対応する著者

研究成果: Article査読

抄録

The ablation phenomena in silica glass were investigated using a visible femtosecond laser and time-resolved pump–probe imaging. A pump pulse with a wavelength of 400 nm was employed. Only gentle ablation occurred at a peak fluence of 6.88 J/cm2, and gentle ablation and strong ablation occurred at a peak fluence of 8.23 J/cm2. At both peak fluences, reflectivity increased owing to excitation at a delay time of ~1 ps. At a delay time of ~30 ps, a decrease in reflectivity due to melting was observed only at the local fluence that generated strong ablation. The ablation that occurred after melting was considered to correspond to strong ablation. Similar changes in reflectivity were observed for two values of the local fluence that corresponded to gentle ablation

本文言語English
ページ(範囲)194-198
ページ数5
ジャーナルJournal of Laser Micro Nanoengineering
16
3
DOI
出版ステータスPublished - 2021

ASJC Scopus subject areas

  • 器械工学
  • 産業および生産工学
  • 電子工学および電気工学

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