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Cylindrical vector (CV) beams, whose polarizations are cylindricallysymmetric, have recently been widely applied in high energy density physicssuch as electron acceleration and intense spatiotemporal optical vorticesgeneration. Thermal-damage-resistant plasma optics are expected to generateintense CV beams. In this work, based on the Faraday effect, we propose amethod that can directly convert an intense linearly/circularly polarizedGaussian beam into a CV/vortex beam by setting up an azimuthally distributedaxial magnetic field in the plasma. Three-dimensional particle-in-cellsimulations demonstrate good conversion efficiency, which offers a new degreeof freedom for manipulating high-power laser pulses and paves the way forfurther studies on ultra-strong vector beams. In addition, our work reveals anew possible source of photon orbital angular momentum related to magnetizedplasma in astrophysics and space physics.

Generation of intense cylindrical vector beams by Faraday effect in plasma