Fig. 13. Generation of multi-singularity VBs.
a Exploring the singularity splitting phenomenon in AMC systems200. b Multiple singularity formation in fractional OAM VBs211. Tailoring multi-singularity beams with c a circular vortex array207 and d an optical vortex array along an arbitrary curvilinear arrangement208. a Reprinted with permission from ref. 200, Copyright (2019), with permission from Elsevier. b Reprinted with permission from ref. 211, OSA Publishing. c Reprinted with permission from ref. 207. Copyright (2019) by John Wiley and Sons. d Reprinted with permission from ref. 208, OSA Publishing