Geometric-Phase Waveplates for Free-Form Dark Hollow Beams
Geometric-Phase Waveplates for Free-Form Dark Hollow Beams
We demonstrate the possibility to create optical beams with phase singularities engraved into exotic intensity landscapes imitating the shapes of a large variety of diverse plane curves. To achieve this aim, we have developed a method for directly encoding the geometric properties of some selected curve into a single azimuthal …