Tunable circular conversion dichroism and asymmetric transmission of terahertz graphene metasurface composed of split rings

被引：38
作者：
Asgari, Somayyeh [1 ]
Rahmanzadeh, Mahdi [2 ]
机构：
[1] KN Toosi Univ, Fac Elect Engn, Tehran, Iran
[2] Sharif Univ Technol, Dept Elect Engn, Tehran, Iran
来源：
OPTICS COMMUNICATIONS | 2020年 / 456卷
关键词：
Chiral; Polarization-dependent devices; Integrated optics; THz; POLARIZED WAVES; CHIRALITY;
D O I：
10.1016/j.optcom.2019.124623
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The asymmetric transmission (AT) has attracted wide attention due to its novel applications. In this paper, we propose and investigate a tunable polarization-dependent intrinsically chiral graphene metasurface composed of split ring arrays in terahertz (THz) region. The resonance frequency of the structure is sensitive to the graphene chemical potential. Circular conversion dichroism (CCD) of the proposed structure is tunable and is reached to 0.36. Our work paths a new approach to propose some other compact and on-chip polarization-dependent structures in THz region. Furthermore, our proposed structure could be a useful segment in polarization-dependent systems.
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页数：5
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