激光脉冲初始相位对电子辐射的影响

Effect of initial phase of laser pulse on electron radiation

为了研究超短超强椭圆偏振激光初始相位对于高能电子辐射特性的影响,采用了Lorentz方程与电子能量方程构造高能电子与强激光场的对撞模型的方法,并使用MATLAB进行数值模拟,获得了电子的运动轨迹以及激光场空间辐射的功率与能量分布的数据与图像,对不同的激光初始相位所对应的3维空间辐射特性进行了研究。结果表明,当激光脉冲撞击电子时,电子产生辐射,且辐射功率呈现出双峰形;高能电子的辐射功率图像在初始相位为0°,180°和360°时表现为对称型双峰,而在其它相位下则呈现出非对称型双峰。该结论为超短超强椭圆偏振激光的初始相位3维反探测研究提供了一定的基础。

In order to study the influence of the initial phase of ultrashort and super elliptically polarized laser on the radiation characteristics of high-energy electrons, the collision model of high-energy electrons and high-energy laser field was constructed by Lorentz equation and electron energy equation, and the numerical simulation was carried out by MATLAB. The data and images of electron trajectory and power and energy distribution of spatial radiation of laser field were obtained. The 3-D radiation characteristics corresponding to different initial laser phases were studied. The results show that when the laser pulse strikes the electron, the electron produces radiation, and the radiation power presents a double peak shape. The radiation power image of high-energy electrons shows symmetrical double peaks when the initial phase is 0°, 180° and 360°. The conclusion provides a certain basis for the study of initial phase 3-D inverse detection of ultrashort and ultra strong elliptically polarized laser.