Asymmetric transmission of linearly polarized waves in terahertz chiral metamaterials

2017 ◽  
Vol 121 (3) ◽  
pp. 033103 ◽  
Author(s):  
Shenying Fang ◽  
Kang Luan ◽  
Hui Feng Ma ◽  
Wenjin Lv ◽  
Yuxiang Li ◽  
...  
Keyword(s):  
Asymmetric Transmission ◽  
Chiral Metamaterials ◽  
Polarized Waves ◽  
Linearly Polarized

scholarly journals Asymmetric Transmission in a Mie-Based Dielectric Metamaterial with Fano Resonance

Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1003 ◽  
Author(s):  
Xiaobo Wang ◽  
Haohua Li ◽  
Ji Zhou
Keyword(s):  
High Performance ◽  
Near Field ◽  
Destructive Interference ◽  
Asymmetric Transmission ◽  
Microwave Frequencies ◽  
Chiral Metamaterials ◽  
Field Coupling ◽  
Polarized Waves ◽  
Linearly Polarized ◽  
Polarization Rotators

Chiral metamaterials with asymmetric transmission can be applied as polarization-controlled devices. Here, a Mie-based dielectric metamaterial with a spacer exhibiting asymmetric transmission of linearly polarized waves at microwave frequencies was designed and demonstrated numerically. The unidirectional characteristic is attributed to the chirality of the metamolecule and the mutual excitation of the Mie resonances. Field distributions are simulated to investigate the underlying physical mechanism. Fano-type resonances emerge near the Mie resonances of the constituents and come from the destructive interference inside the structure. The near-field coupling further contributes to the asymmetric transmission. The influences of the lattice constant and the spacer thickness on the asymmetric characteristics were also analyzed by parameter sweeps. The proposed Mie-based metamaterial is of a simple structure, and it has the potential for applications in dielectric metadevices, such as high-performance polarization rotators.

scholarly journals Dual-band dichroic asymmetric transmission of linearly polarized waves in terahertz chiral metamaterial

Nanophotonics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 3235-3242 ◽  
Author(s):  
Tingting Lv ◽  
Xieyu Chen ◽  
Guohua Dong ◽  
Meng Liu ◽  
Dongming Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Light Propagation ◽  
Polarization State ◽  
Dual Band ◽  
Terahertz Waves ◽  
Asymmetric Transmission ◽  
Polarized Waves ◽  
Wide Range ◽  
Linearly Polarized ◽  
Chiral Metamaterial

AbstractPolarization conversion dichroism is of particular interest in manipulating the polarization state of light, whereas high-performance asymmetric transmission (AT) of linearly polarized waves is still inaccessible in the terahertz range. Here, a bilayer chiral metamaterial consisting of orthogonally chained S-shaped patterns with broken symmetry along the light propagation direction is proposed and demonstrated experimentally to realize a dual-band dichroic AT effect for linearly polarized terahertz waves. The AT effects are robust across a wide range of incident angles. The observed strong AT can be theoretically explained by a multiple reflection and transmission interference model and the transfer matrix method. The proposed bilayer chiral metamaterial may have broad applications in polarization manipulation, chiral biosensing and direction-dependent information processing.

Ultra-broad band diode-like asymmetric transmission of linearly polarized waves based on the three-layered chiral structure

Optik ◽  
2018 ◽  
Vol 164 ◽  
pp. 171-177 ◽  
Author(s):  
Chuan Wang ◽  
Xia Zhou ◽  
Dengfei Tang ◽  
Weikang Pan ◽  
Jianfeng Dong
Keyword(s):  
Broad Band ◽  
Asymmetric Transmission ◽  
Chiral Structure ◽  
Polarized Waves ◽  
Linearly Polarized

Asymmetric transmission and polarization conversion of linearly polarized waves with bilayer L-shaped metasurfaces

2017 ◽  
Vol 10 (5) ◽  
pp. 052602 ◽  
Author(s):  
Xiong-Jun Shang ◽  
Xiang Zhai ◽  
Ling-Ling Wang ◽  
Meng-Dong He ◽  
Quan Li ◽  
...  
Keyword(s):  
Polarization Conversion ◽  
Asymmetric Transmission ◽  
Polarized Waves ◽  
Linearly Polarized

scholarly journals Asymmetric transmission of linearly polarized waves based on Mie resonance in all-dielectric terahertz metamaterials

2020 ◽  
Vol 28 (20) ◽  
pp. 29855
Author(s):  
Yunfei Rao ◽  
Ling Pan ◽  
Chunmei Ouyang ◽  
Quan Xu ◽  
Liyuan Liu ◽  
...  
Keyword(s):  
Asymmetric Transmission ◽  
Mie Resonance ◽  
Polarized Waves ◽  
Linearly Polarized ◽  
Terahertz Metamaterials
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