ABSTRACT
This chapter aims to derive accurate relationships to describe perfect optical vortices (POVs) generated using different techniques, demonstrating that, weak as it may be, there is a dependence between the POV doughnut intensity and the topological charge. It compares the following techniques for VOP generation: using an amplitude-phase field described by a finite-radius Bessel mode; using an optimal phase of the electromagnetic field, as described; and using an electromagnetic field whose phase is formed with a conical axicon and a spiral phase plate. All three approaches are different from that proposed. The chapter demonstrates that an optimal optical element discussed is best suited for generating a POV. Generation of the POV using a combination of a conical axicon and a spiral phase plate was reported.
