Effect of UV Laser Conditioning on the Structure of KDP Crystal

被引：7

作者：

Guo, Decheng ^{[1
,2
]}

Jiang, Xiaodong ^{[1
]}

Huang, Jing ^{[1
]}

Wang, Fengrui ^{[1
]}

Liu, Hongjie ^{[1
]}

Zu, Xiaotao ^{[2
]}

机构：

[1] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Peoples R China

[2] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China

来源：

ADVANCES IN CONDENSED MATTER PHYSICS | 2014年 / 2014卷

基金：

中国国家自然科学基金;

关键词：

POTASSIUM DIHYDROGEN PHOSPHATE; DAMAGE PERFORMANCE; KH2PO4;

D O I：

10.1155/2014/451048

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Multiparametric raster scanning experiments for KDP crystals are carried out to study the laser conditioning efficiency as a function of laser fluence, fluence step, and pulse sequence by using ultraviolet (UV) laser irradiation with pulse duration of approximately 7 ns. It indicates that damage resistance of KDP can be enhanced after conditioning process. And laser conditioning efficiency depends on the maximal fluence which is below the damage threshold. Raman spectra and photothermal absorption have also been studied on KDP crystals before and after multiparametric laser conditioning. Photothermal absorption data reveal that absorbance of conditioned KDP crystal decreases with the increase of laser fluence and the damage threshold of low absorption area is higher. Raman analysis reveals that the effectiveness of laser conditioning relies mainly on the individual mode of PO4 molecule.

引用

页数：7

共 25 条

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