Experimental Realization of Highly Efficient Beam Combination and Steering via Topological Multimode
Abstract Topology multimode provides a promising avenue for developing multi‐channel robust photonic devices and optical power manipulation. Particularly, the backscattering‐immune property of topological multimode holds potential for ideally lossless optical beam combination. In this work, the combination of topological multimode in topologically non‐trivial photonic crystals, is experimentally observed achieving a beam combination efficiency of up to 93%. The near‐perfect combination can be explained by the power orthogonal excitation principle of topological multimode. Furthermore, controllable beam steering is successfully achieved by incorporating topological one‐way large‐area waveguide states into the output spatial channel with tunable excitation. The work paves the way for the application of topological photonics in the directional manipulation of high‐power electromagnetic radiation.
Authors
- Mudi Wang
- Weihan Long
- Lei Bi (ORCID: https://orcid.org/0000-0002-2698-2829)
- Zhongfei Xiong
- C. T. Chan (ORCID: https://orcid.org/0000-0002-9335-8110)
- Yuhao Jing (ORCID: https://orcid.org/0000-0001-5834-8120)
- Di Wu (ORCID: https://orcid.org/0000-0002-9662-0022)
- Yucong Yang
- Yu Yu (ORCID: https://orcid.org/0000-0002-8421-6794)
- Nuo Chen (ORCID: https://orcid.org/0000-0002-1267-1982)
- Junxian Wang (ORCID: https://orcid.org/0000-0002-3641-4251)
- Yuntian Chen (ORCID: https://orcid.org/0000-0001-7471-221X)
- Tianchi Zhang (ORCID: https://orcid.org/0000-0003-1660-2455)
Institutions
- University of Electronic Science and Technology of China (CN)
- Hong Kong University of Science and Technology (HK)
- National Engineering Research Center of Electromagnetic Radiation Control Materials (CN)
- Wuhan National Laboratory for Optoelectronics (CN)
- Huazhong University of Science and Technology (CN)
Publication Details
- Journal
- Laser & Photonics Review
- Published
- 2025-02-28
- DOI
- https://doi.org/10.1002/lpor.202401157
- Citations
- 1
- Primary Topic
- Photonic Crystals and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.25
Funders
- National Natural Science Foundation of China
- Ministry of Science and Technology of the People's Republic of China
- Department of Science and Technology of Sichuan Province