supported by National Natural Science Foundation of China(Grant Nos.62301193,62171165,and U23B2014);China Postdoctoral Science Foundation(Grant No.2022M710944);Postdoctoral fellowships in Heilongjiang Province(Grant No.LBH-Z22017);Young Elite Scientists Sponsorship Program by CAST(Grant No.2023QNRC001)。
Perfect vortex(PV)beam,as a novel paradigm to carry orbital angular momentum(OAM),owns constant radius of energy intensity and infinite mode of helical patterns,which overcomes the divergence performances of conventio...