Theoretical and experimental study on femtosecond laser-induced damage in MgF2 crystals

被引：2

作者：

Li, CB ^{[1
]}

Jia, TQ ^{[1
]}

Sun, HY ^{[1
]}

Li, XX ^{[1
]}

Xu, SZ ^{[1
]}

Feng, DH ^{[1
]}

Wang, XF ^{[1
]}

Ge, XC ^{[1
]}

Xu, ZZ ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Lab High Intens Opt, Shanghai, Peoples R China

来源：

ICO20: LASERS AND LASER TECHNOLOGIES | 2005年 / 6028卷

关键词：

ferntosecond laser; Magnesium Fluoride; damage mechanism; two-photon absorption;

D O I：

10.1117/12.667195

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study single-shot damage morphology of MgF2 irradiated under 800 nm laser. using scanning electronic microscope (SEM). The dependence of damage threshold on laser pulse width is measured by the linear relationship between the area of damage spot and the logarithm of laser energy. The pulse duration ranges from 55 fs to 750 fs. We develop the multiple-equation model (Phys. Rev. Lett. Vol.92, pp. 187401, 2004), in which two-photon absorption in the conduction band is considered. The experimental results agree well with our model.

引用

页数：6

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