Open AccessCorrelation singularities in a partially coherent electromagnetic beam with initially radial polarization
Author(s) -
Yongtao Zhang,
Yan Cui,
Fei Wang,
Yangjian Cai
Publication year - 2015
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.23.011483
Subject(s) - gravitational singularity , physics , polarization (electrochemistry) , coherence (philosophical gambling strategy) , optical vortex , beam (structure) , optics , coherence length , correlation function (quantum field theory) , radial polarization , correlation , laser beams , quantum mechanics , geometry , laser , mathematics , laser beam quality , chemistry , superconductivity , dielectric
We have investigated the correlation singularities, coherence vortices of two-point correlation function in a partially coherent vector beam with initially radial polarization, i.e., partially coherent radially polarized (PCRP) beam. It is found that these singularities generally occur during free space propagation. Analytical formulae for characterizing the dynamics of the correlation singularities on propagation are derived. The influence of the spatial coherence length of the beam on the evolution properties of the correlation singularities and the conditions for creation and annihilation of the correlation singularities during propagation have been studied in detail based on the derived formulae. Some interesting results are illustrated. These correlation singularities have implication for interference experiments with a PCRP beam.