Research of formation of extended light beam with longitudinal polarization using binary axicon with high numerical aperture

A numerical simulation of the diffraction of the laser beams on the basis of the finite-difference time-domain extended axial segment was held. We determined the characteristics and features of diffraction on micro- axicon mode Gauss - Laguerre (0.1) with linear and circular polarization. Shown the possibility increase the longitudinal electric field component at the expense of increase the radius of the element and size of the input beam.