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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 32 — Nov. 10, 2006
  • pp: 8253–8261

Thermodynamic damage mechanism of transparent films caused by a low-power laser

ZhiLin Xia, JianDa Shao, ZhengXiu Fan, and ShiGang Wu  »View Author Affiliations

Applied Optics, Vol. 45, Issue 32, pp. 8253-8261 (2006)

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A new model for analyzing the laser-induced damage process is provided. In many damage pits, the melted residue can been found. This is evidence of the phase change of materials. Therefore the phase change of materials is incorporated into the mechanical damage mechanism of films. Three sequential stages are discussed: no phase change, liquid phase change, and gas phase change. To study the damage mechanism and process, two kinds of stress have been considered: thermal stress and deformation stress. The former is caused by the temperature gradient and the latter is caused by high-pressure drive deformation. The theory described can determine the size of the damage pit.

© 2006 Optical Society of America

OCIS Codes
(140.3330) Lasers and laser optics : Laser damage
(140.3440) Lasers and laser optics : Laser-induced breakdown
(310.3840) Thin films : Materials and process characterization

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 17, 2006
Revised Manuscript: May 26, 2006
Manuscript Accepted: June 27, 2006

ZhiLin Xia, JianDa Shao, ZhengXiu Fan, and ShiGang Wu, "Thermodynamic damage mechanism of transparent films caused by a low-power laser," Appl. Opt. 45, 8253-8261 (2006)

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