The laser induced damage of multilayer optical films

Qiang Xu; Wei Zhang; Yang Liu

doi:10.1117/12.906697

12 January 2012 The laser induced damage of multiplayer optical films

Qiang Xu, Wei Zhang, Yang Liu

Proceedings Volume 8206, Pacific Rim Laser Damage 2011: Optical Materials for High Power Lasers; 82060E (2012) https://doi.org/10.1117/12.906697
Event: Pacific Rim Laser Damage Symposium: Optical Materials for High Power Lasers, 2011, Shanghai, China

Abstract

As an important part of almost all laser systems, optical film is so fragile that easy to damage because of temperature rise. Based on temperature field theory and thermal conduction equation, the physical model of temperature field of multiplayer films illuminated by Gaussian laser is built. By solving the Maxwell equation, the average energy flow rate of plane wave with unit intensity propagation through the films is obtained. The numerical calculation program of the temperature field of multiplayer films illuminated by 1064nm laser is built using alternating direction-implicit technique. The simulation results show that laser spot radius, heat exchange coefficient, laser power and film material have a great effect on the temperature field of multiplayer films. These are the key factors to damage the optical films. The results obtained in this paper would be both theoretical basis and reference for optical thin film components developing.

Citation Download Citation

Qiang Xu, Wei Zhang, and Yang Liu "The laser induced damage of multiplayer optical films", Proc. SPIE 8206, Pacific Rim Laser Damage 2011: Optical Materials for High Power Lasers, 82060E (12 January 2012); https://doi.org/10.1117/12.906697

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