Generation of variable mixed vortex fields by a single static hologram

Recently, a transfer of information based on application of mixed vortex fields has been proposed and experimentally verified. A dynamical creation of vortex superpositions carrying an actual information code has been realized by the spatial light modulator with a limited repetition rate. In this paper, the optical set-up enabling generation of variable optical vortex superpositions by a single static hologram is proposed and examined. The actual information codes are created by a standard dynamical modulation of an array of point sources illuminating the static optical system.