Effect of UV Laser Conditioning on the Structure of KDP Crystal. (18th June 2014)

• Record Type: Journal Article
• Authors: Guo, Decheng; Jiang, Xiaodong; Huang, Jing; Wang, Fengrui; Liu, Hongjie; Zu, Xiaotao
• Other Names: Zheng Wanguo Academic Editor.
• Is Part Of: Advances in condensed matter physics. Volume 2014(2014)
• Publication Date: 2014-06-18
• Subjects: Condensed matter -- Periodicals; Condensed matter; Periodicals; 530.41
• DOI: 10.1155/2014/451048
• Languages: English
• ISSNs: 1687-8124

Abstract

Abstract : 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.