Author(s):
Mao, Baiwei; Liu, Yange; Chang, Wenzhe; Chen, Liang; Feng, Mao; Guo, Huiyi; He, Jiangyong & Wang, Zhi
Abstract:
“It is the basic characteristic of pure vortex light
that there is a phase singularity at the origin. Such a sin-
gularity may be multiple degenerate, which determines the
order of vortex light. Singularities splitting phenomenon
means that singularities no longer concentrate at the origin
but distribute around the space, usually occurring in
impure vortex light. In this paper, we demonstrate the
singularities splitting phenomenon and propose an anal-
ysis method, based on which one may rapidly estimate the
modal components of impure vortex light. As two common
singularity discrimination methods, the spiral and fork
wire interference patterns are compared in distinguishing
splitting singularities. The most widely used spiral inter-
ference pattern is revealed to be the worst form because of
the low resolution. Instead, the fork wire interference
pattern is with higher and easily adjusted resolution. 1‰
impurity is still able to be distinguished through fork wire
interference patterns in the experiment.”
Issue/Year: Nanophotonics, Volume 0; Number 0; 2022
DOI: 10.1515/nanoph-2021-0814