title: Generation and self-healing of vector Bessel-Gauss beams with variant state of polarizations upon propagation.
abstract: We propose a generalized model for the creation of vector Bessel-Gauss (BG) beams having state of polarization (SoP) varying along the propagation direction. By engineering longitudinally varying Pancharatnam-Berry (PB) phases of two constituent components with orthogonal polarizations, we create zeroth- and higher-order vector BG beams having (i) uniform polarizations in the transverse plane that change along z following either the equator or meridian of the Poincaré sphere and (ii) inhomogeneous polarizations in the transverse plane that rotate during propagation along z. Moreover, we evaluate the self-healing capability of these vector BG beams after two disparate obstacles. The self-healing capability of spatial SoP information may enrich the application of BG beams in light-matter interaction, polarization metrology and microscopy.
authors.forename: Peng
authors.initials: P
authors.lastname: Li
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Sheng
authors.initials: S
authors.lastname: Liu
authors.forename: Huachao
authors.initials: H
authors.lastname: Cheng
authors.forename: Lei
authors.initials: L
authors.lastname: Han
authors.forename: Dongjing
authors.initials: D
authors.lastname: Wu
authors.forename: Jianlin
authors.initials: J
authors.lastname: Zhao