Optical vortex trapping and annihilation by means of nonlinear Bessel beams in nonlinearly absorbing media

José L. García Riquelme, Francisco Ramos, Miguel A. Porras

In nonlinear Kerr media at intensities such that multiphoton absorption is significant, a vortex of topological charge m in the center of a high-order nonlinear Bessel beam (NBB) c…