| 激光脉冲宽度对有质动力加速电子的影响 |
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| 引用本文： | 张淼,余玮,林尊琪.激光脉冲宽度对有质动力加速电子的影响[J].光学学报,2005,25(11):506-1509. |
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| 作者姓名： | 张淼 余玮 林尊琪 |
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| 作者单位： | 1. 中国科学院上海光学精密机械研究所高功率激光物理国家实验室,上海,201800
2. 中国科学院上海光学精密机械研究所强场激光物理国家重点实验室,上海,201800 |
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| 摘 要： | 基于真空中单电子运动模型，编程计算得到了高斯激光脉冲与初始位于激光传播轴上电子的相互作用结果。不同激光参鼍条件下，得到了电子的能量增益与激光强度、焦斑大小和脉冲宽度关系。结果表明，高斯激光脉冲焦斑较大时，电子没有明显的能量增益，高斯激光脉冲焦斑太小时，电子也没有明显的能量增益。电子的能量增益有一个最佳焦斑大小。在相同激光强度下，电子能量增益的最佳焦斑大小随脉冲宽度的增大而增大，但最佳焦斑大小与脉冲宽度的比值基本上是不变的。
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| 关 键 词： | 激光光学 电子加速 有质动力 单电子运动模型 |
| 文章编号： | 0253-2239（2005）11-1506-4 |
| 收稿时间： | 2004-10-28 |
| 修稿时间： | 2005-03-01 |
Pulse Duration Effect on the Ponderomotive Accelerating Electron |
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| Zhang Miao,Yu Wei,Lin Zunqi.Pulse Duration Effect on the Ponderomotive Accelerating Electron[J].Acta Optica Sinica,2005,25(11):506-1509. |
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| Authors: | Zhang Miao Yu Wei Lin Zunqi |
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| Institution: | 1.National Laboratory on High-Power Laser Physics, Shanghai Institute of 0ptics and Fine Mechanics, The Chinese Academy qf Sciences, Shanghai 201800; 2. State Key Laboratory of High-Field Laser Physics, Shanghai Institute of 0ptics and Fine Mechanics, The Chinese Academy of Sciences, Shanghai 201800 |
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| Abstract: | Electron acceleration from the interaction of a Gaussian laser pulse with initial axial electron is investigated, using a single test electron model in vacuum. Under the different laser parameters, the electron energy gain depends on the laser intensity, focal spot size and pulse width. The electron energy gain have a optimum focal spot size. There are no evident energy gain when the focal spot size is too big or small. Given the laser intensity, the optimum focal size increases with the pulse width, and the ratio of the optimum focal size to the pulse width is fixed. |
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| Keywords: | laser optics electron acceleration ponderomotive force single test electron model |
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