title: Bessel beams with spatial oscillating polarization.
abstract: Bessel beams are widely used in optical metrology mainly because of their large Rayleigh range (focal length). Radial/azimuthal polarization of such beams is of interest in the fields of material processing, plasma absorption or communication. In this paper an experimental set-up is presented, which generates a Bessel-type vector beam with a spatial polarization, oscillating along the optical axis, when propagating in free space. A first holographic axicon (HA) HA1 produces a normal, linearly polarized Bessel beam, which by a second HA2 is converted into the spatial oscillating polarized beam. The theory is briefly discussed, the set-up and the experimental results are presented in detail.
authors.affiliation: School of Opto-Electronics, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Shiyao
authors.initials: S
authors.lastname: Fu
authors.affiliation: School of Opto-Electronics, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Shikun
authors.initials: S
authors.lastname: Zhang
authors.affiliation: School of Opto-Electronics, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Chunqing
authors.initials: C
authors.lastname: Gao