%0 Journal Article
%T Direct acceleration of electrons by a Laguerre-Gaussian laser beam in vacuum<br>用拉盖尔-高斯激光对真空中电子直接加速
%A Zhao Zhi-Guo
%A <br>赵志国
%A 吕百达
%A Zhao Zhi-Guo
%A Lü Bai-Da
%J 物理学报
%D 2006
%I 
%X 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.
%K laser electron acceleration
%K Laguerre-Gaussian beam
%K liner polarization and circular polarization
%K energy gain<br>激光电子加速
%K 拉盖尔-高斯光束
%K 线偏振和圆偏振
%K 能量增益
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=B65E1CD5298B0234&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=E158A972A605785F&sid=14CA636F97F0824D&eid=0344F3FCD862F7B0&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=13