Laser injection of ultrashort electron pulses into Wakefield plasma waves.
Laser injection of ultrashort electron pulses into Wakefield plasma waves.
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DOI：
10.1103/physrevlett.76.2073
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发表时间：
1996-03
影响因子：
8.6
通讯作者：
D. Umstadter;J. Kim;E. Dodd
中科院分区：
文献类型：
--
作者：
D. Umstadter;J. Kim;E. Dodd
描述了一种新的基于激光等离子体的相对论电子源。它包括正交定向激光束的组合，这些激光束集中在等离子体中。一束激发尾场电子等离子体波。另一种是局部改变一些电子的轨迹，使它们能够被波加速和捕获。使用目前可用的台式太瓦激光器，单个超短持续时间的电子束可以在一毫米的一小部分内加速到多兆电子伏的能量，光脉冲、电子束和等离子体波之间实现飞秒同步。给出了分析结果和数值模拟结果。
A novel laser-plasma-based source of relativistic electrons is described. It involves a combination of orthogonally directed laser beams, which are focused in a plasma. One beam excites a wakefield electron plasma wave. Another locally alters the trajectory of some of the electrons in such a way that they can be accelerated and trapped by the wave. With currently available table-top terawatt lasers, a single ultrashort-duration electron bunch can be accelerated to multi-MeV energies in a fraction of a millimeter, with femtosecond synchronization between the light pulse, the electron bunch, and the plasma wave. Both analytical and numerical-simulation results are presented.