期刊
PHYSICAL REVIEW LETTERS
卷 125, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.237401
关键词
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资金
- National Key R&D Program of China [2017YFA0305100, 2017YFA0 303800]
- National Natural Science Foundation of China [92050114, 61775106, 11904182, 11711530205, 11374006, 11774185, 91750204]
- 111 Project [B07013]
- PCSIRT [IRT0149]
- Open Research Program of Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province
- Fundamental Research Funds for the Central Universities [010-63201003, 010-63201008, 01063201009]
- Tianjin youth talent support program
Optical activity from chiral metamaterials is both fundamental in electrodynamics and useful for polarization control applications. It is normally expected that due to infinitesimally small thickness, two-dimensional (2D) planar metamaterials cannot introduce large optical rotations. Here, we present a new mechanism to achieve strong optical rotation up to 90 degrees by evoking phase transition in the 2D metamaterials through tuning coupling strength between meta-atoms. We analytically elucidate such phenomenon by developing a model of phase-transition coupled-oscillator array. And we further corroborate our ideas with both numerical simulations and experiments. Our findings would pave a new way for applying the concept of phase transition in photonics for designing novel optical devices for strong polarization controls and other novel applications.
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