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3D-Printed Möbius Microring Lasers: Topology Engineering in Photonic Microstructures.

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Summary

Researchers developed 3D topological Möbius microring resonators using femtosecond laser writing. These resonators enable unique spin-orbit coupled lasing and control over all laser polarization states, advancing 3D topological photonics.

Keywords:
3D-printingMöbius microring lasersphotonic microstructurestopology engineering

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Area of Science:

  • Photonics
  • Materials Science
  • Condensed Matter Physics

Background:

  • Photonic technology relies on manipulating light in structured materials.
  • Nontrivial topological structures offer novel photon manipulation phenomena.
  • Fabricating 3D topological photonic microstructures remains challenging.

Purpose of the Study:

  • To extend topological photonics into 3D microarchitectures.
  • To fabricate 3D topological Möbius microring resonators.
  • To explore novel photon manipulation capabilities in 3D structures.

Main Methods:

  • Femtosecond laser direct writing technique.
  • Fabrication of dye-doped polymer microstructures.
  • Characterization of 3D topological Möbius microring resonators.

Main Results:

  • Fabricated high-quality-factor 3D topological Möbius microring resonators.
  • Achieved spin-orbit coupled lasing at a very low threshold.
  • Observed laser output with all polarization states due to geometric/Berry phase.

Conclusions:

  • Demonstrated a novel approach to 3D topological photonics.
  • Möbius microrings offer unique spin-orbit coupled lasing properties.
  • This work provides a new design philosophy for functional photonic devices.