Dual-band asymmetric transmission of linear polarization in bilayered chiral metamaterial

2013 ◽  
Vol 102 (19) ◽  
pp. 191905 ◽  
Author(s):  
Jinhui Shi ◽  
Xingchen Liu ◽  
Shengwu Yu ◽  
Tingting Lv ◽  
Zheng Zhu ◽  
...  
Nanophotonics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 3235-3242 ◽  
Author(s):  
Tingting Lv ◽  
Xieyu Chen ◽  
Guohua Dong ◽  
Meng Liu ◽  
Dongming Liu ◽  
...  

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.


2015 ◽  
Vol 118 (3) ◽  
pp. 787-791 ◽  
Author(s):  
Dejun Liu ◽  
Zhongyin Xiao ◽  
Xiaolong Ma ◽  
Lei Wang ◽  
Kaikai Xu ◽  
...  

2017 ◽  
Vol 73 ◽  
pp. 55-64 ◽  
Author(s):  
Yajun Liu ◽  
Song Xia ◽  
Hongyu Shi ◽  
Anxue Zhang ◽  
Zhuo Xu

2016 ◽  
Vol 848 ◽  
pp. 351-356 ◽  
Author(s):  
Yong Zhi Cheng ◽  
Bo He ◽  
Chen Jun Wu ◽  
Rong Zhou Gong

A dual-band linear polarization transformer with diode-like asymmetric transmission using a three-layer composite metamaterial was proposed and investigated numerically. The proposed three-layer composite metamaterial was comprised of two layers of asymmetric split-ring resonators and a sub-wavelength cross structures sandwiched symmetrically between these layers. By introducing the sub-wavelength cross structure into the asymmetric chiral metamaterial, an electromagnetic wave tunneling effect formed for the incident waves. Thus, the transmissions in the composite structures can be strongly modified, one of the two off-diagonal cross-polarized transmission (txy) of the Jones matrix is enhanced while all the others (txx, tyy, and tyx) are suppressed extremely at resonances. This present design for enhancing asymmetric transmission via polarization conversion can be used as many novel devices, such as optical isolators, asymmetric wave splitters, and circulators.


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