Methods for Observation of Material Deformations and Energy Dissipation Processes during a Femtosecond Laser Machining Inside Transparent Materials

• SAKAKURA Masaaki

  JST, Innovation Plaza Graduate School of Engineering, Kyoto University

• TERAZIMA Masahide

  Graduate School of Science, Kyoto University

• MIURA Kiyotaka

  Graduate School of Engineering, Kyoto University

• HIRAO Kazuyuki

  Graduate School of Engineering, Kyoto University

Bibliographic Information

Other Title

• フェムト秒レーザーを用いた透明媒質内部加工における変形過程とエネルギー散逸過程の観測法
• フェムトビョウ レーザー オ モチイタ トウメイ バイシツ ナイブ カコウ ニ オケル ヘンケイ カテイ ト エネルギー サンイツ カテイ ノ カンソクホウ

Abstract

Structural and energy dynamics after femtosecond laser irradiation inside glasses have been investigated by a transient lens (TrL) method. As the conventional TrL method is too simplistic to extract a complicated refractive index distribution (Δn), which is induced by focused femtosecond pulsed laser, we calculated the TrL signal based on the diffraction theory. From simulations of the observed TrL signal, we determined timedependence of pressure wave generation, pressure wave propagation, and thermal diffusion process. The material deformation and energy dissipation processes inside the material can be determined from this analysis of the TrL signal.

Journal

• The Review of Laser Engineering

  The Review of Laser Engineering 35 (2), 109-115, 2007

  The Laser Society of Japan

Keywords

• Femtosecond laser machining
• Glass
• Transient lens
• Pressure wave
• Thermal diffusion

Details

• CRID: 1390282679624627968
• NII Article ID: 10018544556
• NII Book ID: AN00255326
• DOI: 10.2184/lsj.35.109
• COI: 1:CAS:528:DC%2BD2sXjsFSktr0%3D
• ISSN: 13496603
• ISSN: 03870200
• NDL BIB ID: 8712155
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8712155
• Web Site: https://www.jstage.jst.go.jp/article/lsj/35/2/35_109/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed