SIOM OpenIR  > 中科院强激光材料重点实验室
Laser conditioning mechanism revealed by defect and absorption variation in the bulk and at the surface of KDP/DKDP crystals
Hu, Guohang; Zhao, Yuanan; Li, Dawei; Liu, Xiaofeng; Zhu, Meiping; Shao, Jianda; yazhao@siom.ac.cn
2016
Source PublicationLASER-INDUCED DAMAGE IN OPTICAL MATERIALS 2016
ISSN0277-786X
Department材料
AbstractPrevious works proved that laser conditioning process was able to improve laser induced damage thresholds (LIDTs) in the bulk of KDP/DKDP crystals. In this paper, it's also demonstrated that laser conditioning process was an effective method to improve LIDTs at their surface. The variation of scattering defects and absorption in the bulk of DKDP crystals during laser pre-exposure was investigated by combining light scattering technique and on-line transmittance measurement technique. Laser-induced disappearance of scattering defects and decrease of absorption revealed the mitigation process of laser damage initiators in the bulk of KDP/DKDP crystals. At the surface of KDP/DKDP crystals, most of damage initiators were the invisible defects. Laser conditioning process could mitigate the invisible defects, but it's hard to mitigate the indentation with fractures. Therefore, it's admitted that laser conditioning process could help to improve the optical properties of crystal material, but it's hard to improve the properties of optical finishing.
Language英语
Document Type会议论文
Identifierhttp://ir.siom.ac.cn/handle/181231/27412
Collection中科院强激光材料重点实验室
Corresponding Authoryazhao@siom.ac.cn
Affiliation中国科学院上海光学精密机械研究所
Recommended Citation
GB/T 7714
Hu, Guohang,Zhao, Yuanan,Li, Dawei,et al. Laser conditioning mechanism revealed by defect and absorption variation in the bulk and at the surface of KDP/DKDP crystals[C],2016.
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