外文题目: Origin of the plasma scalds in dielectric coatings induced by 1 omega laser
作者: Wang, Hu; Qi, Hongji; Zhao, Jiaoling; Wang, Bin; Chai, Yingjie; Yu, Zhen; Shao, Jianda
刊名: Appl. Phys. Lett.
年: 2016 卷: 108 期: 14 文章编号：141603
英文关键词:

FUSED-SILICA; MULTILAYER MIRRORS; 1064 NM; FILMS; SURFACE; DAMAGE; LAYER
英文摘要:
The plasma scalds initiated by a 1053 nm (1 omega) nanosecond laser are separated from the defect-induced damage pits, which is verified as a result of the ionization wavefront with the subnanosecond laser. Considering the beam reflection from solid-state absorption fronts during the damage process, a theoretical scalding threshold about 6: 84 J/cm(2) (12ns) based on the energy required to start an air avalanche is evaluated and agrees well with the experimental scalding threshold. The occurrence order of the initial explosion and subsequent ionization wavefront is verified to explain most of the damage morphologies caused by the 1 omega laser. In addition to the significance in laser conditioning or cleaning for a high-power laser system, the results also indicate that through the occurrence of plasma scalds it is possible to mark the onset time of air plasma during laser-coating interaction. (C) 2016 AIP Publishing LLC.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1063/1.4945687


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