| 用拉盖尔-高斯激光对真空中电子直接加速 |
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| 引用本文： | 赵志国,吕百达.用拉盖尔-高斯激光对真空中电子直接加速[J].物理学报,2006,55(4):1798-1802. |
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| 作者姓名： | 赵志国 吕百达 |
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| 作者单位： | (1)洛阳师范学院物理系，洛阳 471022;四川大学激光物理与化学研究所，成都 610064; (2)四川大学激光物理与化学研究所，成都 610064 |
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| 基金项目： | 国家科技攻关项目;中国科学院资助项目 |
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| 摘 要： | 对用拉盖尔-高斯(LG)光束加速电子作了研究.结果表明，仅模指数为p和l=1的LG光束的纵向电场可用于加速电子.模指数为p和l=1的线偏振和圆偏振LG光束都对电子有加速效果.对轴上光场的相速度和群速度以及电子能量增益等物理特征作了讨论.给出了轴上光场的相速度和群速度、加速电位及电子能量增益等的解析表达式，并作了数值计算和分析.
关键词：
激光电子加速
拉盖尔-高斯光束
线偏振和圆偏振
能量增益
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| 关 键 词： | 激光电子加速 拉盖尔-高斯光束 线偏振和圆偏振 能量增益 |
| 收稿时间： | 7/3/2005 12:00:00 AM |
| 修稿时间： | 2005-07-032005-12-05 |
Direct acceleration of electrons by a Laguerre-Gaussian laser beam in vacuum |
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| Zhao Zhi-Guo,Lü Bai-Da.Direct acceleration of electrons by a Laguerre-Gaussian laser beam in vacuum[J].Acta Physica Sinica,2006,55(4):1798-1802. |
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| Authors: | Zhao Zhi-Guo Lü Bai-Da |
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| Institution: | 1. Department of Physics, Lttoyang Normal College, Luoyang 471022, China; 2. Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China |
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| Abstract: | The acceleration of electrons by a Laguerre-Gaussian(LG) beam in vacuum is studied. It is shown that only the longitudinal electric field of the LG beam with mode indices p and l=1 can be used to accelerate electrons. The linearly- and circularly-polarized LG beams with mode indices p and l=1 effectively play the role in laser electron acceleration. Some physical characteristics, such as phase and group velocities of the axial optical field, and energy gain of electrons etc., are discussed. The analytical expressions for the phase and group velocities of the axial optical field, accelerating potential and energy gain etc. are derived and are used to make numerical analysis. |
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| Keywords: | laser electron acceleration Laguerre-Gaussian beam liner polarization and circular polarization energy gain |
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