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Coupling Tai Chi Chiral Metamaterials with Strong Optical Activity in Terahertz Region

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Abstract

We demonstrated Tai Chi chiral metamaterials of mirror-symmetric and complementary structures in terahertz (THz) region. We investigated the properties of these structures by calculating the transmissions under different circularly polarization waves and analyzing the surface current distributions. The chiral mirror-symmetric structure has circular dichroism and strong optical activity due to electromagnetic field coupling between layers with sub-wavelength thickness. Moreover, the structures with multiple metallic layers or twist angle between layers can realize chirality tunability, which can be used for THz polarized devices. Besides, the complementary structure has potential applications for polarization-insensitive devices in THz region.

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Acknowledgments

This work was supported by National Science Foundation of China (No. 11374240 and 61265005), Natural Science basic Research Plan in Shaanxi Province of China (No. 2012KJXX-27), Ph.D. Programs Foundation of Ministry of Education of China (No. 20136101110007), Key Laboratory Science Research Plan of Shaanxi Education Department (13JS101), National Key Basic Research Program (2014CB339800).

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Authors and Affiliations

  1. State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi’an, 710069, China

    Yuanyuan Huang, Zehan Yao, Qian Wang & Xinlong Xu

  2. Laboratory for Terahertz, College of Electronic Engineering and Automatization, Guilin University of Electronic Technology, Guilin, 541004, People’s Republic of China

    Fangrong Hu

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  1. Yuanyuan Huang
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  2. Zehan Yao
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  3. Qian Wang
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  4. Fangrong Hu
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  5. Xinlong Xu
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Correspondence to Xinlong Xu.

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Huang, Y., Yao, Z., Wang, Q. et al. Coupling Tai Chi Chiral Metamaterials with Strong Optical Activity in Terahertz Region. Plasmonics 10, 1005–1011 (2015). https://doi.org/10.1007/s11468-015-9892-7

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  • DOI: https://doi.org/10.1007/s11468-015-9892-7

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