The laser induced damage of multiplayer optical films

被引：0
|
作者：
Xu, Qiang [1 ]
Zhang, Wei [1 ]
Liu, Yang [1 ]
机构：
[1] Xidian Univ, Sch Sci, Xian 710071, Peoples R China
来源：
PACIFIC RIM LASER DAMAGE 2011: OPTICAL MATERIALS FOR HIGH POWER LASERS | 2012年 / 8206卷
关键词：
optical film; temperature field; laser damage; ADI;
D O I：
10.1117/12.906697
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
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页数：8
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