Algebra of optical dislocations with plasmonic nanostructures

• Pasha Goz, Andre Yaroshevsky, and Yuri Gorodetski
• received 02/20/2024; accepted 04/17/2024; posted 04/17/2024; Doc. ID 521949
• Abstract: Plasmonic structures with physical and the Berry-type dislocation are shown to produce vortices with phase singularity according to the system and the illumination parameters. We demonstrate that by combining the two types of the dislocations in one structure the manipulation with the topological charge of the emerging vortex beams can be controlled in an intriguing way. As a result, the plasmonic field in the near-field can be conveniently modified and selectively excited.