Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
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Analysis of Carbonization of Polymer Thin Film Using Various Lasers

다양한 레이저(CW~FS)를 이용한 폴리머 박막의 탄화현상 해석

  • Ahn, Dae-Hwan (Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Bak, Byoung-Gu (Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH)) ;
  • Kim, Dong-Sik (Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH))
  • 안대환 (포항공과대학교 기계공학과) ;
  • 박병구 (포항공과대학교 기계공학과) ;
  • 김동식 (포항공과대학교 기계공학과)
  • Published : 2009.09.30
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Abstract

The process of thermal-degradation of thin-film polymeris studied in this work for various laser sources from CW to fs. Samples composed of a thin polymer layer sandwiched between two glass plates are irradiated by the lasers and the threshold irradiance of polymer carbonization is experimentally measured. In the numerical analysis, the transient temperature distribution is calculated and the number density of carbonization in the polymer layer is also estimated. It is shown that pulsed lasers can result in more uniform distribution of temperature and carbonization than the CW laser.

Keywords