Tunable generator of radially and azimuthally polarized vortex Bessel beams based on the interference polarizer

The new optical system to generate azimuthally and radially polarized Bessel laser beams is proposed. The system is based on the transformation of the conical wave fronts when passing through interference polarizing plate. The polarization control characteristics occur when forming the beam by changing the divergence of the beam incident on the diffractive axicon. The radially and azimuthally polarized Bessel beams using binary phase axicon are experimentally obtained. (paper)