All-Silicon Diatomic Terahertz Metasurface with Tailorable Linear Polarization States
|Corresponding Author||Shi，Wei; Zhang，Yan; Zhang，Yating; Yao，Jianquan|
Polarization plays a key role in fundamental science, and the improvement in miniaturization and practicability of polarization conversion devices could provide more degrees of freedom for light–matter interactions. Metasurfaces that can manipulate arbitrary polarization states at subwavelength scales can significantly reduce the complexity of meta-optical systems. Here, a general design of an all-silicon diatomic metasurface operating in the terahertz band that can generate a tailorable linear polarization state by the superposition of two meta-atoms with individual geometric parameters is experimentally demonstrated. By periodically arranging polarization-converting and polarization-maintaining meta-atoms, the existence of interference effects enables the proposed diatomic meta-platform to act as an optimal linear polarization operator. The gradient arrangement of the meta-molecules under the profile of the propagation phase is deduced by using the advanced Jones matrix, so that the polarization filtering and wavefront manipulation can be realized simultaneously, including the generation of tightly converged vortex and bifocal focusing beams. This demonstration of generating tailorable linear polarization states located on the Poincaré sphere directly from arbitrarily polarized waves can significantly facilitate the development of functional polarization meta-devices.
National Key Research and Development Program of China["2021YFB2800703","2017YFA0700202"] ; National Natural Science Foundation of China["61675147","61975146","62075159","62105240","91838301"] ; Basic Research Program of Shenzhen[JCYJ20170412154447469]
|WOS Research Area|
Materials Science ; Optics
Materials Science, Multidisciplinary ; Optics
|WOS Accession No|
Cited Times [WOS]:4
|Document Type||Journal Article|
|Department||Department of Electrical and Electronic Engineering|
1.Key Laboratory of Opto-Electronics Information Technology (Tianjin University),Ministry of Education,School of Precision Instruments and Opto-Electronics Engineering,Tianjin University,Tianjin,No. 92 WeiJin Road,300072,China
2.Beijing Key Laboratory for Metamaterials and Devices,Key Laboratory of Terahertz Optoelectronics,Ministry of Education,and Beijing Advanced Innovation Center for Imaging Technology,Department of Physics,Capital Normal University,Beijing,100048,China
3.Information Materials and Device Applications Key Laboratory of Sichuan Province,Chengdu University of Information Technology,Chengdu,610225,China
4.Department of Electrical and Electronic Engineering,South University of Science and Technology of China,Shenzhen,518055,China
|Corresponding Author Affilication||Department of Electrical and Electronic Engineering|
Li，Hui,Xu，Hang,Zheng，Chenglong,et al. All-Silicon Diatomic Terahertz Metasurface with Tailorable Linear Polarization States[J]. Advanced Optical Materials,2022.
Li，Hui.,Xu，Hang.,Zheng，Chenglong.,Liu，Jingyu.,Li，Jie.,...&Yao，Jianquan.(2022).All-Silicon Diatomic Terahertz Metasurface with Tailorable Linear Polarization States.Advanced Optical Materials.
Li，Hui,et al."All-Silicon Diatomic Terahertz Metasurface with Tailorable Linear Polarization States".Advanced Optical Materials (2022).
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