Acceleration and radiation of externally injected electrons in laser plasma wakefield driven by a Laguerre

Acceleration and radiation of externally injected electrons in laser plasma wakefield driven by a Laguerre–Gaussian pulse

Shen Zhong-Chen^{1, 2}, Chen Min^{1, 2, †}, Zhang Guo-Bo^{1, 3}, Luo Ji^{1, 2}, Weng Su-Ming^{1, 2}, Yuan Xiao-Hui^{1, 2}, Liu Feng^{1, 2}, Sheng Zheng-Ming^{1, 2, 4}

(color online) Spatial distributions of the laser fields, wakefields and electron beam density at instants of t = (a) 57.42 fs and (b) 114.84 fs. The cyan–yellow color represents the LG laser electric field. The olive and white colors represent the charge density of the externally injected electrons and the donut-like wake structure, respectively.