Broadband terahertz rotator with an all-dielectric metasurface

Quanlong Yang, Xieyu Chen, Quan Xu, Chunxiu Tian, Yuehong Xu, Longqing Cong, Xueqian Zhang, Yanfeng Li, Caihong Zhang, Xixiang Zhang, Jiaguang Han, Weili Zhang

Research output: Contribution to journalArticlepeer-review

48 Scopus citations


Polarization manipulation is essential in developing cutting-edge photonic devices ranging from optical communication displays to solar energy harvesting. Most previous works for efficient polarization control cannot avoid utilizing metallic components that inevitably suffer from large ohmic loss and thus low operational efficiency. Replacing metallic components with Mie resonance-based dielectric resonators will largely suppress the ohmic loss toward high-efficiency metamaterial devices. Here, we propose an efficient approach for broadband, high-quality polarization rotation operating in transmission mode with all-dielectric metamaterials in the terahertz regime. By separating the orthogonal polarization components in space, we obtain rotated output waves with a conversion efficiency of 67.5%. The proposed polarization manipulation strategy shows impressive robustness and flexibility in designing metadevices of both linear-and circular-polarization incidences.
Original languageEnglish (US)
Pages (from-to)1056
JournalPhotonics Research
Issue number11
StatePublished - Oct 17 2018

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): CRF-2016-2950-RG5
Acknowledgements: Ministry of Science and Technology of the People’s Republic of China (MOST); National Key Research and Development Program of China (2017YFA0701004); National Natural Science Foundation of China (NSFC) (61875150, 6142010660, 61427814, 61605143, 61735012); King Abdullah University of Science and Technology (KAUST) (CRF-2016-2950-RG5). We thank Dr. Kai Wang for helpful discussion. C. Tian and X. X. Zhang would like to acknowledge the financial support from King Abdullah University of Science and Technology (KAUST).


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