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3D-Printed Möbius Microring Lasers: Topology Engineering in Photonic Microstructures
Xianqing Lin1, Wu Zhou1,2, Yingying Liu1
1Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 24, 2022
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.
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.
