论文标题
强烈的Terahertz辐射通过碰撞等离子体的韦克菲尔德产生
Strong Terahertz Radiation Generation via Wakefield in Collisional Plasma
论文作者
论文摘要
我们表明，可以使用在THZ范围内产生辐射的外部磁场来产生Wakefield的横向分量。为此，我们进行了分析和数值计算，以在碰撞等离子体的现实情况下评估韦克菲尔德的组成部分。我们观察到，韦克菲尔德沿外部磁场的方向产生，尽管在平行的方向上观察到韦克场的成分，并垂直于激光和磁场的传播方向。基于准静态近似下的扰动技术的方法，对超高斯轮廓的激光器进行了一项研究。当施加更强的磁场时，发现THZ辐射的场会增强。较高指数的激光器也是如此。
We show that the transverse component of the wakefield can be produced with the application of an external magnetic field that generates radiation in the THz range. For this, we carry out analytical and numerical calculations to evaluate the components of the wakefield in a realistic situation of collisional plasma. We observe that the wakefield in the direction of the external magnetic field is produced, though the components of the wakefield are observed in the directions parallel and perpendicular to the direction of propagation of the laser and the magnetic field. Based on the approach of perturbation technique under quasi-static approximation, a study is made on the magnitude of emitted radiation pulses from the wakefield for the case of lasers of super-Gaussian profile. The field of THz radiation is found to be enhanced when stronger magnetic field is applied; the same is the case for the lasers of higher index.
