Analysis on laser-induced transient damage behavior in multilayer coating

OPTICS COMMUNICATIONS

卷:358

Article

Du Lifeng¹  Fu Bo²  Li Fengyu¹  Zhang Rongzhu¹ 

[1] Sichuan Univ, Coll Elect & Informat Engn, Chengdu 610064, Peoples R China

[2] China Acad Engn Phys, Inst Fluid Phys, Mianyang 621900, Sichuan, Peoples R China

关键词: Anti-reflective coating;    Avalanche ionization;    Complex refractive index;   

DOI  :  10.1016/j.optcom.2015.09.010

来源: Elsevier

【 摘 要 】

Based on the ionization theory and the Drucle model of free electron gas, transient damage principle of the anti-reflection coating under ultrashort pulses are analyzed. Specifically, the damage of an anti-reflection coating designed by ZnS/SiO2 materials is calculated. The results show that during the irradiation process the parameters, such as the refractive index, the electric held and the free electron density, should impact on each other. The coupling relationship between these parameters causes the change in the refractive index, which further leads to the decrease of transmittance of anti-reflection coating from 0.96 to 0.01. In addition, the coupling relationship causes the repartition of free electron density constantly, which eventually leads to the external damage of anti-reflection coating. (C) 2015 Elsevier B.V. All rights reserved

【 授权许可】

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