Mitigation of BSG damage caused by upstream flaw in the final optics assembly
文献类型：会议论文
| 作者 | Jiao, Zhaoyang; Sun, Mingying; Zhao, Dongfeng; Zhu, Jianqiang |
| 出版日期 | 2016 |
| 英文摘要 | In high-power laser facilities for the inertial confinement fusion, there are many large-radius optical elements, which inevitably have some flaws on the surface. The flaws can cause optical intensity intensification and therefore damage the optical elements in the downstream, especially for the beam sampling grating (BSG), which is an important element in the final optics assembly. In this paper, several physical models are established to study the optical field enhancement in the BSG position modulated by upstream flaw. Firstly, when only the linear transportation is considered, it is found that there is a peak or valley of the maximum intensity after the focus lens compared with the ideal wave front. Meanwhile the influence of flaw has an effective range. Secondly, when the nonlinear effect of the focus lens is also considered, the peak maximum downstream is much bigger than the one for the linear consideration and the damage risk of the BSG there is much higher too. From the simulation, we can see that it is important to place the BSG in a properly selected position to mitigate the laser induced damage. The results could give some references to the mitigation of BSG damage caused by upstream flaws and the layout of the final optics assembly. |
| 会议录 | PACIFIC RIM LASER DAMAGE 2016 - OPTICAL MATERIALS FOR HIGH-POWER LASERS
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| 语种 | 英语 |
| ISSN号 | 0277-786X |
| 源URL | [http://ir.siom.ac.cn/handle/181231/27383]  |
| 专题 | 上海光学精密机械研究所_高功率激光物理国家实验室 |
| 作者单位 | 中国科学院上海光学精密机械研究所 |
| 推荐引用方式 GB/T 7714 | Jiao, Zhaoyang,Sun, Mingying,Zhao, Dongfeng,et al. Mitigation of BSG damage caused by upstream flaw in the final optics assembly[C]. 见:. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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