Journal
PHYSICAL REVIEW B
Volume 86, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.86.035103
Keywords
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Funding
- Natural Science Foundation of Heilongjiang Province in China [LC201006]
- China Postdoctoral Science Foundation [2012M511171]
- Special Foundation for Harbin Young Scientists [2012RFLXG030]
- National Science Foundation of China [11104043, 61171024, 61171026, 60990320, 60990324]
- National High Tech (863) Projects [2011AA010202, 2012AA030702]
- 111 Project [111-2-05]
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We propose a kind of stereometamaterial composed of periodic structures with twisted asymmetrical split-ring (ASR) resonators. The proposed stereometamaterial has intrinsic chirality and can be used as a multiband polarization spectral filter. Full-wave simulation and experimental results demonstrate that the stereometamaterial with the twist angle of phi = 90 degrees exhibits three ripple-free cross-polarization transmission peaks at normal incidence of plane waves. The cross-polarization transmission bands are centered at the maxima of circular dichroism, accompanied by pairs of pure circular birefringence points. In physics, the near-field electric and magnetic coupling of orthogonal ASR molecules in parallel planes contributes to the conversion of two orthogonal linear polarizations. The transmission of the proposed multiband polarization spectral filter can be engineered via the mutual twist angle and asymmetry of the ASRs and the thickness of the dielectric spacer layer and also be tuned via the angle of incidence.
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