OPTO-IT

Formation of spiral intensity by binary vortical axicon

S. A. Degtyarev^ab, S. N. Khonina^ab, V. V. Podlipnov<sup>ab

a</sup> Samara State Aerospace University
^b Image Processing Systems Institute, Russian Academy of Sciences

Abstract: We fabricated a spiral field-intensity distribution in a near-field when a laser beam was focused by a binary phase spiral axicon. It is shown by means of 3D-simlation in Comsol and life experiments with the near-field microscope NT-MDT Integra Spectra. Derived experimental measurements have been verified by the numerical simulations.

Keywords: focusing, photon spiral, binary phase spiral axicon, finite element method, Comsol software, near-field microscope NT-MDT Integra Spectra.

Received: 31.03.2014