Reconfigurable phase-change metasurface for multifunctional control of chiral emission
In optoelectronics and photonics, developing multifunctional light-emitting devices has become a prominent research area. However, achieving integration of polarization control, intensity modulation, and tunability within a single device presents a formidable challenge. Here, we report the design and implementation of a symmetric bound state in the continuum (BIC) realized by a metasurface composed of perovskite nanobars on a silica substrate. Through the incorporation of both in-plane and out-of-plane symmetries, the BIC undergoes a transformation into a chiral quasi-bound state in the continuum (q-BIC). The chiral q-BIC metasurface exhibits an intrinsic chiral response, characterized by nearly perfect circular dichroism of 0.96, a key property for chiral optical applications. Furthermore, the integration of Sb2S3 phase-change materials into the metasurface enables dynamic regulation of resonant circularly polarized emission wavelengths between 760 and 820 nm, with selective enhancement of right circularly polarized emission by 240-fold and suppression of left circularly polarized emission. Our chiral q-BIC metasurface enables single-device multi-function integration, offering a versatile and dynamically tunable platform for enhanced chiral optical responses across optoelectronics and photonics.
Authors
- S. Hu (ORCID: https://orcid.org/0000-0002-3851-8003)
- Cai Luo (ORCID: https://orcid.org/0009-0000-6540-9606)
- Yanxue Hou (ORCID: https://orcid.org/0009-0004-6123-6495)
- Nannan Hu (ORCID: https://orcid.org/0000-0003-3159-3518)
- Xiaofeng Fan (ORCID: https://orcid.org/0000-0001-6288-4866)
- Yang Guo (ORCID: https://orcid.org/0000-0001-8975-9387)
- Baogang Quan (ORCID: https://orcid.org/0000-0003-0836-5189)
- Ziyi Fu (ORCID: https://orcid.org/0009-0008-6165-2535)
- Zhi‐Xiang Yu (ORCID: https://orcid.org/0000-0003-0939-9727)
- Xiaoyu Zhang (ORCID: https://orcid.org/0000-0001-7528-4405)
- Geng Li (ORCID: https://orcid.org/0000-0002-1924-9522)
- Changzhi Gu (ORCID: https://orcid.org/0000-0002-2689-2807)
- Shibing Tian
- Jianmei Li (ORCID: https://orcid.org/0000-0002-5529-5251)
- Haifang Yang (ORCID: https://orcid.org/0000-0002-6862-5723)
- Aizi Jin
Institutions
- Jilin University (CN)
- Chinese Academy of Sciences (CN)
- Henan University of Technology (CN)
- Yanshan University (CN)
- Songshan Lake Materials Laboratory (CN)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Division of Materials Science and Engineering (AU)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-05-19
- DOI
- https://doi.org/10.1063/5.0267717
- Citations
- 5
- Primary Topic
- Metamaterials and Metasurfaces Applications
- Type
- article
- Field-Weighted Citation Impact
- 2.14
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China