429 / 2019-03-01 15:08:24

New Optical Manipulation of Relativistic Vortex Cutter

LG laser,laser plasma interaction,particle acceleration

全体主题 > Fundamental Physics at Extremes

A new relativistic vortex cutter driven by the Laguerre–Gaussian (LG) mode is carried out for the first time in three-dimensional particle-in-cell simulations. Studies show that the electric fields periodically concentrate and emanate within every laser wavelength for the reflected CP LG (p = 0, l = 1, σ_z = -1) laser, which just works like a vortex cutter, resulting in a relativistic ultra-short collimated electron cluster with a constant period in space. A single particle model is given and verifies that the cluster formation has a close relation with the parameters of orbital angular momentum (l) and spin angular momentum (σz). Such relativistic vortex cutter can be potentially applied for the accelerator, generating high-flux particle and coherent radiation sources, and so on.