title: Determining the topological charge of stochastic electromagnetic vortex beams with the degree of cross-polarization.
abstract: By analysis of the degree of cross-polarization of a stochastic electromagnetic vortex beam, we find that the number of bright ring dislocations is equal to the topological charge of the vortex beam. Based on this property, we suggest a method to access the measurement of the orbital angular momentum of vector vortex beams, which holds true for cases of high coherence or low coherence.
authors.forename: Meilan
authors.initials: M
authors.lastname: Luo
authors.forename: Daomu
authors.initials: D
authors.lastname: Zhao