English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Surface plasmon polaritons carrying orbital angular momentum are of greatfundamental and applied interest. However, common approaches for theirgeneration are restricted to having a weak dependence on the properties of theplasmon-generating illumination, providing a limited degree of control over theamount of delivered orbital angular momentum. Here we experimentally show thatby tailoring local and global geometries of vortex generators, a change incircular polarization handedness of light imposes arbitrary large switching inthe delivered plasmonic angular momentum. Using time-resolved photoemissionelectron microscopy we demonstrate pristine control over the generation androtation direction of high-order plasmonic vortices. We generalize our approachto create complex topological fields and exemplify it by studying andcontrolling a "bright vortex", exhibiting the breakdown of a high-order vortexinto a mosaic of unity-order vortices while maintaining the overall angularmomentum density. Our results provide tools for plasmonic manipulation andcould be utilized in lab-on-a-chip devices.

Functional meta lenses for compound plasmonic vortex field generation and control