Frequency coding metasurface for multiple directions manipulation of terahertz energy radiation
Source abstract
Abstract
A multifunctional frequency coding metasurface is proposed in terahertz frequency band. Different from the previous coding metasurface with a fixed phase difference of the neighbor coding unit cells in the whole working frequency band, the proposed frequency coding metasurface has the linear change phase difference in the operating frequency band with different phase sensitivity. It can flexibly control the reflected terahertz waves to the numerous directions by changing the working frequency without redesign the coding metasurface structure. Additionally, we demonstrate the polarization insensitive properties of our frequency coding metasurface by using 1-bit frequency coding metasurface with the periodic sequences of “0-0, 0-1” along the x-direction, 2-bit random frequency coding metasurface and non-periodic frequency coding metasurface. Our frequency coding metasurface provides a novel and flexible way to manipulate the energy radiation of terahertz wave and has tremendous values in terahertz systems.
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Research context
OpenAlex topics: Metamaterials and Metasurfaces Applications · Millimeter-Wave Propagation and Modeling · Terahertz technology and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Centre for THz Research, China Jiliang University , Hangzhou 310018, China
Funding
National Natural Science Foundation of China
References (22)
Show source-provided references
1. Composite medium with simultaneously negative permeability and permittivity10.1103/physrevlett.84.4184 ↗
2. Experimental verification of a negative index of refraction10.1126/science.1058847 ↗
3. Negative index of refraction in optical metamaterials10.1364/ol.30.003356 ↗
4. The Terahertz metamaterials for linear polarization conversion and anomalous refraction10.1126/science.1235399 ↗
5. Realization of optical superlens imaging below the diffraction limit10.1088/1367-2630/7/1/255 ↗
6. Hiding under the carpet: A new strategy for cloaking10.1103/physrevlett.101.203901 ↗
7. An ultrathin directional carpet cloak based on generalized Snell’s law10.1063/1.4824898 ↗
8. Three-dimensional optical holography using a plasmonic metasurface10.1038/ncomms3808 ↗
9. Broadband anomalous reflection based on gradient low-Q meta-surface10.1063/1.4809548 ↗
10. Perfect metamaterial absorber10.1103/physrevlett.100.207402 ↗
11. A metamaterial absorber for the terahertz regime: Design, fabrication and characterization10.1364/oe.16.007181 ↗
12. Ultra-wideband and high-efficiency liner polarization converter based on double V-shaped metasurface
13. A metamaterial solid-state terahertz phase modulator10.1038/nphoton.2009.3 ↗
14. A tunable universal terahertz filter using artificial dielectrics based on parallel-plate waveguides10.1063/1.3495994 ↗
15. Design of a wide-gain-bandwidth metasurface antenna at terahertz frequency10.1063/1.4984274 ↗
16. Metasurface for multi-channel terahertz beam splitters and polarization rotators10.1063/1.5028401 ↗
17. Coding metamaterials, digital metamaterials and programmable metamaterials10.1038/lsa.2014.99 ↗
18. Addition theorem for digital coding metamaterials
19. Flexible manipulation of terahertz wave reflection using polarization insensitive coding metasurfaces10.1364/oe.25.029983 ↗
20. Broadband and wide-angle RCS reduction using a 2-bit coding ultrathin metasurface at terahertz frequencies10.1038/srep39252 ↗
21. Defect-induced fano resonances in corrugated plasmonic metamaterials10.1002/adom.201600960 ↗
22. Excitation of dark multipolar plasmonic resonances at terahertz frequencies10.1038/srep22027 ↗