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  1. Home
  3. Free-space Skyrmions Radiated From A Geometric Phase Aperture.
  1. Home
  3. Free-space Skyrmions Radiated From A Geometric Phase Aperture.

Related Experiment Video

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
06:25

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

Free-Space Skyrmions Radiated from a Geometric Phase Aperture.

Peng-Yi Feng1, Benfeng Bai1, Jie Yang2,3

  • 1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China.

ACS Nano
|June 3, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Researchers created free-space optical spin skyrmions using a single plasmonic device. This breakthrough enables robust chip-to-chip optical communications by overcoming previous limitations of radiative skyrmions.

Keywords:
free-space skyrmionsintermediate fieldscanning near-field optical microscopyspin−orbit interactiontopological quasiparticles

More Related Videos

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Related Experiment Videos

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
06:25

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Area of Science:

  • Photonics
  • Plasmonics
  • Topological Photonics

Background:

  • Optical spin skyrmions offer unique topological properties for data encoding.
  • Existing methods for generating radiative spin skyrmions are complex and rely on bulky optical elements.
  • Surface plasmonics enable subwavelength skyrmions but confine them to interfaces, preventing free-space radiation.

Purpose of the Study:

  • To develop a direct method for generating free-space optical spin skyrmions.
  • To overcome the limitations of spatial confinement and bulky optical setups.
  • To enable on-chip interconnection for high-capacity optical communications.

Main Methods:

  • Utilized a single plasmonic geometric phase aperture device.
  • Engineered skyrmion textures in radiated fields via spin-orbit interaction in metallic nanoslits.
  • Leveraged Pancharatnam-Berry geometric phases to transform circularly polarized waves into vortex beams.

    • Main Results:

    • Successfully generated free-space optical spin skyrmions from a single plasmonic device.
    • Skyrmion fields were formed by nesting vortex beams with residual light.
    • Experimental visualization confirmed skyrmion textures using spin-selective, phase-resolved scanning near-field optical microscopy.
    • Skyrmions were generated in the intermediate field region, bridging near-field and far-field.

    Conclusions:

    • The plasmonic geometric phase aperture provides a direct route to free-space radiative spin skyrmions.
    • This approach overcomes the need for cascaded, bulky optical elements.
    • The generated optical skyrmions are suitable for high-capacity and robust chip-to-chip optical communications.