极化(电化学)
全息术
物理
圆极化
符号
手性(物理)
相(物质)
光学
量子力学
数学
色量子动力学
化学
手征对称破缺
算术
物理化学
Nambu–Jona Lasinio模型
微带线
作者
Yueyi Yuan,Qun Wu,Shah Nawaz Burokur,Kuang Zhang
出处
期刊:IEEE Transactions on Microwave Theory and Techniques
日期:2023-08-01
卷期号:71 (8): 3259-3272
被引量:25
标识
DOI:10.1109/tmtt.2023.3256527
摘要
A chirality-assisted phase is introduced to innovatively impose separate phase profiles in two circular polarization (CP) preserving channels, namely, two co-polarized output components under left-handed and right-handed circularly polarized (LHCP and RHCP) illuminations. Such a scheme is physically implemented by a proposed multi-layered meta-atom that achieves chiral characteristics by inner twisting angles between adjacent functional elements. A proof-of-concept metasurface is constructed to realize separate holographic images in two polarization-preserved fields with different propagating distances, respectively. In order to achieve sufficient utilization of the two polarization-preserved components, a further approach that can suppress polarization conversion is proposed with a polyatomic unit composed of four separate chiral meta-atoms arranged in a $2\times $ 2 array. A dual-holographic metasurface is designed to impose characters “ $L$ ” and “ $R$ ” in two co-polarized fields with little energy distributed in corresponding cross-polarized fields. A prototype of the metasurface is fabricated and experimentally measured. The measurements agree well with theoretical predictions and full-wave simulations, showing in the co-polarized field a character “ $L$ ” under LHCP incidence and an “ $R$ ” under LHCP incidence. The proposed mechanism provides a theoretical foundation for further CP channel expansion and modulations and has great potential in multifunctional antenna design and wireless communications.
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