Consideration on relation between penetrated power and topological charge of millimeter-wave vortex in magnetized plasma

Abstract

It was demonstrated that the vortex field of a hybrid mode can propagate in the magnetized plasma region where plane waves are unable to propagate due to the cut-off condition. In this study, the dependence of the penetrated power of injected as millimeter-wave vortices of the hybrid mode in magnetized plasma is analyzed using the Finite-Difference Time-Domain (FDTD) method. The effect of the radius size of the corrugated waveguide on the penetrated power is described, revealing its significant contribution to reducing the deviation of topological charge in the hybrid mode. Furthermore, it was found that the penetrated power of the vortex field in magnetized plasma strongly depends on the topological charge l and the deviation of topological charge.