Formation of Bessel light beams using electrically-driven LC elements.

A.A. Kazak, A.L. Tolstik, E.A. Melnikova, O.G. Romanov

Belarusian state university, Belarus

Proposed and experimentally implemented a new method of creation the Bessel light beams of different orders by electrically-driven LC diffraction elements. Presented elements are able to change the polarisation and phase structure of initial incident flat wave due to anisotropic modulation of refractive index inside the layer of nematic LC. The orientation of LC molecules is defined by previously exposed photopolymeric layers on the substrates of LC cell.