New mechanism for polarization singularity of vector vortex beams
Abstract
It was recently realized that the polarization bases of the planewave modes in the integral representation of a light beam need to be determined by a degree of freedom arising from the divergencefree Maxwell's equation. This is a frequently introduced real unit vector in the literature, called Stratton vector. The polarization bases so determined are singular at the momentum that is parallel to the Stratton vector. Here we show that the polarization singularity of vector vortex beams given by the integral representation comes from the singularity of the polarization bases in association with the Stratton vector. The consistency of the polarization structure of the vector vortex beams with their polarization bases is also discussed.
 Publication:

arXiv eprints
 Pub Date:
 June 2020
 arXiv:
 arXiv:2007.00198
 Bibcode:
 2020arXiv200700198L
 Keywords:

 Physics  Optics
 EPrint:
 10 pages