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) (a) Intensity distribution of far field radiation within the ranges of θ ∈ [0°, 5°] and φ ∈ [0°, 360°]. (b) Radiation distribution as a function of polar angle θ. (c) Radiation distribution in polar angle–energy space in the plane parallel to the laser polarization with φ = 0°. (d) The radiation spectrum along the laser propagation axis where the polar angle is θ = 0° and the azimuthal angle is φ = 0°.