期刊
PHYSICAL REVIEW B
卷 89, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.165128
关键词
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资金
- National Science Foundation of China [61201083, 61275094, U1231201, 613111156, 61171024, 61171026, 60990320, 60990324]
- Natural Science Foundation of Heilongjiang Province in China [LC201006]
- China Postdoctoral Science Foundation [2012M511171, 2013T60487]
- Special Foundation for Harbin Young Scientists [2012RFLXG030]
- Fundamental Research Funds for the Central Universities
- 111 Project [B13015, 111-2-05]
- National High Tech (863) Projects [2011AA010202, 2012AA030402]
A broadband asymmetric transmission of linearly polarized waves with totally suppressed copolarization transmission is experimentally demonstrated in ultrathin 90 degrees-twisted Babinet-inverted metasurfaces constructed by an array of asymmetrically split ring apertures. The only accessible direction-dependent cross-polarization transmission is allowed in this anisotropic chiral metamaterial. Through full-wave simulation and experiment results, the bilayered Babinet-inverted metasurface reveals broadband artificial chirality and asymmetric transmission, with a transmission contrast that is better than 17.7 dB within a 50% relative bandwidth for two opposite directions. In particular, we can modify polarization conversion efficiency and the bandwidth of asymmetric transmission via parametric study.
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