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Related Experiment Video

Updated: Nov 7, 2025

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
09:29

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

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Functional Meta Lenses for Compound Plasmonic Vortex Field Generation and Control.

Eva Prinz1, Grisha Spektor2, Michael Hartelt1

  • 1Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Erwin Schroedinger Strasse 46, 67663 Kaiserslautern, Germany.

Nano Letters
|May 3, 2021
PubMed
Summary

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Researchers can now precisely control plasmonic angular momentum by engineering vortex generators. This breakthrough allows for arbitrary switching of orbital angular momentum in surface plasmon polaritons, enabling advanced optical applications.

Area of Science:

  • Optics and Photonics
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Surface plasmon polaritons (SPPs) with orbital angular momentum (OAM) are crucial for fundamental and applied research.
  • Existing methods for generating SPP-OAM offer limited control, as they weakly depend on illumination properties.

Purpose of the Study:

  • To demonstrate a novel method for precisely controlling the orbital angular momentum of surface plasmon polaritons.
  • To achieve arbitrary switching of plasmonic angular momentum by tailoring vortex generator geometries.

Main Methods:

  • Experimental generation of SPPs using tailored local and global geometries of vortex generators.
  • Utilizing time-resolved photoemission electron microscopy (TR-PEEM) for precise control and observation.
Keywords:
Plasmonicsfunctional focusingmetasurfaceorbital angular momentumpolarization

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Last Updated: Nov 7, 2025

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  • Investigating the creation of complex topological fields, including 'bright vortices'.

    • Main Results:

    • Demonstrated arbitrary large switching in delivered plasmonic angular momentum by altering helicity of light and generator geometry.
    • Achieved pristine control over the generation and rotation direction of high-order plasmonic vortices.
    • Successfully created and controlled complex topological fields, observing the breakdown of high-order vortices into unity-order vortices.

    Conclusions:

    • The developed approach provides unprecedented tools for manipulating plasmonic fields and their angular momentum.
    • This control over plasmonic vortices opens new avenues for advanced optical devices, including lab-on-a-chip technologies.