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首页> 外文期刊>Contributions to Plasma Physics >Emission of Ultrashort Electromagnetic Pulses from Electron Bunches Formed and Accelerated by Laser Beams with Tilted Amplitude Fronts
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Emission of Ultrashort Electromagnetic Pulses from Electron Bunches Formed and Accelerated by Laser Beams with Tilted Amplitude Fronts

机译：倾斜前沿的激光束形成和加速的电子束发出的超短电磁脉冲的发射

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摘要

The dynamics of an electron in a standing wave generated by a pair of counterpropagating linearly polarized relativistically intense laser pulses and the emission of electromagnetic radiation by the electron are analyzed. The pulses are assumed to have tilted amplitude fronts and asymmetric focal spots. The analysis of the dynamics is performed by solving numerically the Newton equation with the corresponding Lorentz force, and the emission of radiation is simulated based on the Lienard-Wiechert potentials. The electrons are accelerated by the direct action of the standing wave field and are shown to form a small short bunch. For relativistic intensities, the energies gained by the electrons reach several GeV. It is demonstrated that the radiation emitted by the electrons in the bunch is a single electromagnetic pulse confined to a narrow solid angle and having an attosecond duration.
机译：分析了由一对反向传播的相对论性强激光脉冲产生的驻波中电子的动力学以及电子发出的电磁辐射。假定脉冲具有倾斜的振幅前缘和不对称的焦点。通过用相应的洛伦兹力数值求解牛顿方程来进行动力学分析，并基于Lienard-Wiechert势模拟辐射的发射。电子通过驻波场的直接作用而加速，并显示形成一个小的短束。对于相对论强度，电子获得的能量达到几个GeV。已经证明，束中的电子发射的辐射是一个电磁脉冲，被限制在狭窄的立体角内，并具有阿秒的持续时间。

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