超短超强激光与微毛细管作用的研究
文献类型：学位论文
| 作者 | 钟方川 |
| 学位类别 | 博士后 |
| 答辩日期 | 1998 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 徐至展 |
| 关键词 | 超短强激光、微毛细管、等离子体、X射线 |
| 其他题名 | A Novel Study of the Interaction between Ultra-short Intense Laser Pulse and Microcapillary |
| 中文摘要 | 在上海光机所强光光学开放实验室开展了超短强激光与微毛细管相互作用的初步研究。用轨迹追踪法计算了平行和锥形毛细管内壁上的光强分布。发现管壁上的光强随距离阶跃式地快速衰减。进行了超短强激光与微毛细管相互作用的初步实验，解决了实验上的技术难点，为进一步的实验莫定了基拙，并获得了具有较好方向性的毛细管X射线光源，其亮度较平面靶来得高。对飞秒和纳秒激光作用下的A1和Cu等离子体的X射线辐射进行了测量和分析、比较。实验结果表明在飞秒激光脉冲下等离子体X射线峰值向短波方向移动。同时等离子体的的电离阶数和温度在飞秒下比纳秒高。 |
| 英文摘要 | A novel investigation on the interaction between ultra一short intense laser pulses and microcapillary has been carried out in Laboratory for High Intensity Optics，Shanghai Institute of Optics and Fine Mechanics.The 1 i gh t f 1 ux on the capillary wall while guiding a laser is simulated in ray tracing method. Calculated results indicate that flux on the capillary wall attenuated jumpily along the it’s light axis. A experiment has been done for studying the interaction between ultra一short intense laser pulses and microcapillary. intervene technical difficult point is solved and make The the further experiment realizable. A microcapillary X-ray source with good direction is gained and it’s brightness is higher than that of plan target. The X-ray emission of A1 and Cu plasma generated by fs and ns laser pulses have been measured and compared. The experimental results show that under fs laser irradiation the emission peak is moved to shorter wavelength. The ionization stage and temperature of fs produced plasma is higher than that produced by ns laser. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16011]  |
| 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 | 钟方川. 超短超强激光与微毛细管作用的研究[D]. 中国科学院上海光学精密机械研究所. 1998. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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