利用消衍射透镜列阵及光谱色散平滑实现焦斑均匀辐照
文献类型：期刊论文
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| 作者 | 江秀娟 ; 周申蕾 ; 林尊琪 ; 朱俭 |
| 刊名 | 物理学报
 |
| 出版日期 | 2006 |
| 卷号 | 55期号:11页码:5824 |
| 关键词 | 光谱色散平滑 smoothing by spectral dispersion 透镜列阵 lens array 衍射 diffraction 多光束干涉 beamlets interference |
| ISSN号 | 1000-3290 |
| 其他题名 | Improving of the irradiation uniformity on targets with a diffraction-weakened lens array and spectral dispersion smoothing |
| 中文摘要 | 提出将空间域的透镜列阵法和时间域的光谱色散平滑法结合起来实现靶面的均匀辐照．消衍射型透镜列阵能获得边缘陡峭且顶部较平坦的准近场焦斑，光谱色散平滑则能有效地抹平焦斑内部由多光束干涉引起的细密条纹．数值结果显示，通过该方案能获得均匀性较好的焦斑．进一步分析了光谱色散平滑单元中位相调制和光栅的参数对辐照均匀性的影响，发现参数的选取要在焦斑均匀性和能量利用率之间取得合理平衡，以在整体上获得最佳的均匀辐照效果．; A scheme employing a lens array and the technique of smoothing by spectral dispersion is presented for uniform irradiation on targets in inertial confinement fusion. Quasi-near field spots with a profile of sharp edge and flat top can be obtained with a diffraction-weakened lens array, while the speckles imposed on the spot by beamlets interference can be smoothed by spectral dispersion. Simulation results indicate that this scheme is a good candidate for improving the irradiation uniformity. The dependence of the smoothing performance on the characteristics of phase modulation and dispersion is further discussed, and it is found that parameters of the system of spectral dispersion and lens array must be chosen carefully to make optimal compromise between uniformity and usable energy of the laser beam. |
| 分类号 | TN248 |
| 收录类别 | ei |
| 语种 | 中文 |
| 公开日期 | 2009-09-18 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/2980]  |
| 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 |
| 推荐引用方式 GB/T 7714 | 江秀娟,周申蕾,林尊琪,等. 利用消衍射透镜列阵及光谱色散平滑实现焦斑均匀辐照, Improving of the irradiation uniformity on targets with a diffraction-weakened lens array and spectral dispersion smoothing[J]. 物理学报,2006,55(11):5824, 5828. |
| APA | 江秀娟,周申蕾,林尊琪,&朱俭.(2006).利用消衍射透镜列阵及光谱色散平滑实现焦斑均匀辐照.物理学报,55(11),5824. |
| MLA | 江秀娟,et al."利用消衍射透镜列阵及光谱色散平滑实现焦斑均匀辐照".物理学报 55.11(2006):5824. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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