| 题名 | 基于超短超强激光的离子加速与极端光场产生 |
| 作者 | 吉亮亮 |
| 学位类别 | 博士 |
| 答辩日期 | 2011 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 沈百飞 |
| 关键词 | 超短超强激光脉冲 圆偏振 等离子体 离子加速 极端光场 |
| 其他题名 | Ion Acceleration and Extreme Laser Field Generation Based on Ultra-Short and -Intense Lasers |
| 中文摘要 | 光与物质相互作用一直是人们致力研究的核心物理问题之一。激光及其啁啾脉冲放大技术(CPA)的发明提供了前所未有的超短超强光场条件，实验室己能获得聚焦强度超过1022 W/cm2、单脉冲宽度小于10fs的激光脉冲，如此强的激光可将物质迅速电离形成等离子体，光与物质的相互作用也进入了强相对论非线性光学领域。在这些进展的推动下，激光加速、高次谐波与阿秒脉冲产生、强场核物理和真空量子力学效应等研究得到广泛关注，它们不但在能源、医疗等应用方面具有重要的意义，而且为探索粒子的运动、结构以及真空性质等前沿的基础物理问题提供了强大的手段，因此逐渐成为光学、等离子体物理领域非常具有活力的研究方向。在激光与等离子体的相互作用过程中，激光的偏振有非常重要的影响，圆偏振激光因其有质动力的独特性而衍生出许多重要的应用，如激光加速中最受关注的光压整体加速离子机制。基于这一点，本论文多方面研究超短超强圆偏振激光与等离子体靶的相互作用，特别关注激光驱动的离子加速以及作用过程中单周期激光、超强激光、阿秒脉冲等极端光场的产生. |
| 英文摘要 | Light-matter interaction has always being one of the critical concerns in physics. The inventions of laser and chirped pulse amplification (CPA) technique offer ultra-short and -intense light field conditions that have never been realized before. Recently laser pulses with peak intensity above 1022W/cm2 and pulse duration below l0fs are available in lab. Such a strong laser field can ionize matter immediately to form plasma, leading laser-matter interaction to the regime of highly relativistic nonlinear optics. Motivated by the above achievements, lesearches on laser acceleration, high harmonic and attosecond pulse generation, high field nuclear physics and quantum-mechanic effects of vacuum have been attracting broad interests. These researches are not only significant in critical applications such as energy source and medical treatment but also offering powerful tools to explore frontiers of fundamental physics like the nature of basic particle and vacuum. They become more and more active in optics and plasma physics. Laser polarization plays an important role during interaction. Various important applications, such as the most attractive laser ion acceleration scheme-light pressure acceleration (LPA), have been proposed by use of the unique ponderomotive force of circularly polarized (CP) laser. Based on this conception, this thesis performs many-sided investigations on ultra-short and -intense CP laser interacting with plasma target, especially on the laser-driven ion acceleration and extreme light field generation. The latter includes producing single-cycle laser, ultra-intense light and attosecond pulse. |
| 语种 | 中文 |
| 内容类型 | 学位论文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/15811]  |
| 专题 | 上海光学精密机械研究所_学位论文 |
| 推荐引用方式 GB/T 7714 | 吉亮亮. 基于超短超强激光的离子加速与极端光场产生[D]. 中国科学院上海光学精密机械研究所. 2011. |
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