Optimizing the rotating point spread function by SLM aided spiral phase modulation

摘要: We demonstrate the vortex point spread function (PSF) whose shape and rotation sensitivity to defocusing can be controlled by a phase-only modulation implemented in spatial or frequency domains. Rotational effects are studied detail as result of spiral carried out discrete radial azimuthal sections with different topological charges. As main result, direct connection between properties PSF parameters mask is found subsequently used for an optimal shaping control its rate. Experiments on verify good agreement theoretical predictions potential method applications microscopy, tracking particles 3D imaging.