Singularities splitting phenomenon for the superposition of hybrid orders structured lights and the corresponding interference discrimination method

Abstract It is the basic characteristic of pure vortex light that there a phase singularity at origin. Such may be multiple degenerate, which determines order light. Singularities splitting phenomenon means singularities no longer concentrate origin but distribute around space, usually occurring in impure In this paper, we demonstrate and propose an analysis method, based on one rapidly estimate modal components As two common discrimination methods, spiral fork wire interference patterns are compared distinguishing singularities. The most widely used pattern revealed to worst form because low resolution. Instead, with higher easily adjusted 1‰ impurity still able distinguished through experiment.