Calculation of temperature field of CO2 laser conditioning of fused silica

Chaoyang Wei; Hongbo He; Jianda Shao; Zhi Deng; Jian Shen; Zhengxiu Fan

doi:10.1117/12.607468

8 December 2004 Calculation of temperature field of CO₂ laser conditioning of fused silica

Chaoyang Wei, Hongbo He, Jianda Shao, Zhi Deng, Jian Shen, Zhengxiu Fan

Proceedings Volume 5774, Fifth International Conference on Thin Film Physics and Applications; (2004) https://doi.org/10.1117/12.607468
Event: Fifth International Conference on Thin Film Physics and Applications, 2004, Shanghai, China

Abstract

We calculate the transient and steady state temperature field of CO₂ laser conditioning of fused silica using thermal transporting model. We find that surface temperature at the beam center grows rapidly at the initial heating stage both for the linear thermal transport and nonlinear heat transport, then grows very slowly approaching the stationary value. The axial thermal gradients of nonlinear thermal transport, accounting for the increased thermal conductivity at high temperature, are more smooth than those of the linear case.

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Chaoyang Wei, Hongbo He, Jianda Shao, Zhi Deng, Jian Shen, and Zhengxiu Fan "Calculation of temperature field of CO₂ laser conditioning of fused silica", Proc. SPIE 5774, Fifth International Conference on Thin Film Physics and Applications, (8 December 2004); https://doi.org/10.1117/12.607468

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KEYWORDS

Silica

Carbon dioxide lasers

Gas lasers

Transient nonlinear optics

Carbon monoxide

Convection

Laser induced damage

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