Through the simulation of 3D laser pulse appearance in vacuum, it was found that a channel was formed due to the extremely large ponderomotive force associated with laser pulse.

• 模拟了激光脉冲在真空中的3维传播形貌。由3维密度分布图发现：激光产生的巨大的有质动力向两侧推动粒子，形成等离子体密度通道；