  Surface plasmon polaritons carrying orbital angular momentum are of great
fundamental and applied interest. However, common approaches for their
generation are restricted to having a weak dependence on the properties of the
plasmon-generating illumination, providing a limited degree of control over the
amount of delivered orbital angular momentum. Here we experimentally show that
by tailoring local and global geometries of vortex generators, a change in
circular polarization handedness of light imposes arbitrary large switching in
the delivered plasmonic angular momentum. Using time-resolved photoemission
electron microscopy we demonstrate pristine control over the generation and
rotation direction of high-order plasmonic vortices. We generalize our approach
to create complex topological fields and exemplify it by studying and
controlling a "bright vortex", exhibiting the breakdown of a high-order vortex
into a mosaic of unity-order vortices while maintaining the overall angular
momentum density. Our results provide tools for plasmonic manipulation and
could be utilized in lab-on-a-chip devices.
