Open AccessControlling the polarization singularities of the focused azimuthally polarized beams
Author(s) -
Wei Zhang,
Sheng Liu,
Peng Li,
Xiangyang Jiao,
Jianlin Zhao
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.000974
Subject(s) - polarization (electrochemistry) , optics , physics , gravitational singularity , optical vortex , dipole , angular momentum , radial polarization , spiral (railway) , focal point , elliptical polarization , circular polarization , topological quantum number , laser beams , linear polarization , beam (structure) , cardinal point , laser , classical mechanics , laser beam quality , quantum mechanics , mathematical analysis , chemistry , mathematics , microstrip
We mainly investigate the polarization singularities of the focused azimuthally polarized (AP) beams modulated by spiral phase and sector obstacles. The results reveal that either the spiral phase or sector obstacle can convert the central V-point to C-points, C-point dipoles, or even double V-points under certain conditions. The conversion can be selectively controlled by appropriately setting the topological charge of the spiral phase and the sector angle of the obstacle. These results may have implications for the researches on polarization, focal field manipulation, or even angular momentum of the focused cylindrically polarized beams.