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Published on: November 27, 2012
Nanoimprinted topological laser in the visible.
Qiang Zhang1, Rui Duan2, Yutian Ao3
1Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China; Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
Topological photonics enables reliable fabrication of photonic devices using nanoimprint lithography (NIL). This approach overcomes imperfections in NIL by creating robust topological lasers with higher-order topological corner states (HOTCS).
Area of Science:
- Photonics
- Materials Science
- Quantum Physics
Background:
- Nanoimprint lithography (NIL) is a key technique for fabricating photonic devices.
- NIL's reliability is often limited by imperfections during the demolding process.
- Topological photonics offers defect-robust states, potentially solving NIL's limitations.
Purpose of the Study:
- To demonstrate a reliable topological laser using single-step nanoimprinting.
- To leverage higher-order topological corner states (HOTCS) for defect mitigation in NIL.
- To establish topological photonics for scalable manufacturing of NIL-based devices.
Main Methods:
- Fabrication of a topological laser via single-step nanoimprinting.
- Utilizing colloidal perovskite nanocrystals as the material medium.
- Investigating the properties of higher-order topological corner states (HOTCS).
Main Results:
- Successfully fabricated a topological laser supporting multiple HOTCS.
- Demonstrated that topological protection effectively mitigates NIL-induced imperfections.
- Achieved reliable detection of HOTCS, even in the visible spectrum.
Conclusions:
- Topological photonics enhances the reliability of nanoimprint lithography manufacturing.
- This work provides a scalable route for mass-producing topological lasers.
- Low-index materials can be effectively used for reliable NIL-based topological photonic devices.
