Transmission-Reflection-Integrated Metasurface with Simultaneous Amplitude and Phase Controls of Circularly Polarized Waves in Full Space

被引:13
|
作者
Sun, Shi [1 ,2 ]
Ma, Hui Feng [1 ,2 ]
Chen, Yue Teng [1 ,2 ]
Cui, Tie Jun [1 ,2 ]
机构
[1] Southeast Univ, Sch Informat Sci & Engn, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China
[2] Southeast Univ, Inst Electromagnet Space, Nanjing 210096, Peoples R China
基金
中国国家自然科学基金;
关键词
amplitude control; circularly-polarized waves; full space; phase control; transmission-reflection integrated metasurface; METALENS; METAMATERIALS; INTERFERENCE; HOLOGRAMS; LOBE;
D O I
10.1002/lpor.202300945
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In recent years, manipulations of amplitudes and phases of circularly polarized (CP) waves using metasurfaces have attracted significant attention. However, most of the current works are limited to operating in reflection or transmission space, and the amplitude manipulations are mainly achieved through polarization conversion or resistive loss, which will inevitably lead to cross-polarization pollution and energy waste. Here, a transmission-reflection-integrated metasurface that can manipulate the amplitudes and phases of the CP waves simultaneously in full space, which can not only realize arbitrary amplitude allocation of transmitted and reflected CP waves but also independently manipulate their phase responses is proposed. As proofs of concept, two integrated metasurfaces are designed and demonstrated, including a CP reflectarray antenna with simultaneously low side-lobe level and low cross-polarization level, and a meta-grating that can arbitrarily control the intensity of transmitted diffraction wave while focusing the reflected wave. Both simulated and measured results agree very well with the theoretical predictions, demonstrating the powerful ability of the proposed metasurface to control the CP waves in full space, which is promising to be applied in future satellite communications, photonic meta-devices, and so on. A metasurface with simultaneous amplitude and phase controls of circularly polarized (CP) waves in full space is proposed, which can not only realize arbitrary amplitude allocation of transmitted and reflected CP waves, but also independently manipulate their phase responses. This method proposed in this work provides more degrees of freedom for metasurfaces to manipulate CP electromagnetic waves in full space.image
引用
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页数:10
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