Open AccessControllable mode transformation in perfect optical vortices
Author(s) -
Xinzhong Li,
Haixiang Ma,
C. L. Yin,
Jie Tang,
Hehe Li,
Miaomiao Tang,
Jingge Wang,
Yuping Tai,
Xiufang Li,
Yishan Wang
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.000651
Subject(s) - axicon , ellipse , optics , optical vortex , physics , vortex , transformation (genetics) , bessel function , beam (structure) , laser , biochemistry , chemistry , astronomy , laser beams , gene , thermodynamics
We report a novel method to freely transform the modes of a perfect optical vortex (POV). By adjusting the scaling factor of the Bessel-Gauss beam at the object plane, the POV mode transformation can be easily controlled from circle to ellipse with a high mode purity. Combined with the modulation of the cone angle of an axicon, the ellipse mode can be freely adjusted along the two orthogonal directions. The properties of the "perfect vortex" are experimentally verified. Moreover, fractional elliptic POVs with versatile modes are presented, where the number and position of the gaps are controllable. These findings are significant for applications that require the complex structured optical field of the POV.