Dynamics of femtosecond laser pulse induced damage in multilayers，成果详细信息-中国科技论文在线

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Dynamics of femtosecond laser pulse induced damage in multilayers

贾天卿， Haiyi Sun a ， * ， Tianqing Jia a ， Zhongchao Wei b ， Jianrong Qiu a ， c ， Xiaoxi Li a ， Chengbin Li a ， Shizhen Xu a ， Donghai Feng a ， Hezhou Wang b ， Zhizhan Xu a

Optical Materials 28 (2006) 1372-1376，-0001，（）：

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摘要/描述

We report the single-shot damage thresholds of MgF2/ZnS omnidirectional reflector for laser pulse durations from 50 fs to 900 fs. A coupled dynamic model is applied to study the damage mechanisms, in which we consider not only the electronic excitation of the material, but also the influence of this excitation-induced changes in the complex refractive index of material on the laser pulse itself. The results indicate that this feedback effect plays a very important role during the damage of material. Based on this model, we calculate the threshold fluences and the time-resolved excitation process of the multiplayer. The theoretical calculations agree well with our experimental results.

关键词: MgF2/ ， ZnS omnidirectional reflector ， Damage threshold ， Damage mechanism ， Localized dynamics

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