Visualization 5: Modeling the ponderomotive interaction of high-power laser beams with collisional plasma: the FDTD-based approach LinZhili ChenXudong DingPanfeng QiuWeibin PuJixiong 2017 vortex Laguerre-Gaussian beam propagating in plasma Originally published in Optics Express on 03 April 2017 (oe-25-7-8440)