Scaling laws of optical components during laser induced thermal damage process

Zhaokai Lou; Kai Han; Jian Chen; Hao Liu; Minsun Chen; Guomin Zhao

doi:10.1117/12.2524462

29 March 2019 Scaling laws of optical components during laser induced thermal damage process

Zhaokai Lou, Kai Han, Jian Chen, Hao Liu, Minsun Chen, Guomin Zhao

Proceedings Volume 11046, Fifth International Symposium on Laser Interaction with Matter; 110461F (2019) https://doi.org/10.1117/12.2524462
Event: Fifth International Symposium on Laser Interaction with Matter, 2018, Changsha, China

Abstract

In order to study the scaling laws of optical components, we set up a model based on the heat conduction theory and thermodynamic theory. Then the similarity theory was used to the model analyzation. Finally, we demonstrate three conclusions which are related to the practical engineering application. The first one is that thermal damage behaviors of different scale optical components are similar when the linear power density of irradiated laser are the same. In other words, we should use the linear power density to represent the resistance of damage tolerance for optical components The second one is the judgement standard of scram time. We find the scram time of large-aperture system is certain times as much as the scram time of small-aperture system. The third one is about how to design the scaled experiment can we make two different scale laser systems obey the similar thermal damage behaviors. This study is of great help for the damage prevention of the optical components.

Citation Download Citation

Zhaokai Lou, Kai Han, Jian Chen, Hao Liu, Minsun Chen, and Guomin Zhao "Scaling laws of optical components during laser induced thermal damage process", Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110461F (29 March 2019); https://doi.org/10.1117/12.2524462

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KEYWORDS

Optical components

Laser induced damage

High power lasers

Optical coatings

Continuous wave operation

Laser optics

Laser systems engineering

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