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Anomalous reflection beam steering based on high-bit coding metasurfaces
FENG LIN1, WENKANG HUANG1, XUEJUN HE1, CHENXIA LI2,*
- Zhejiang Institute of Economics & Trade, Hangzhou 310018, China
- Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China
We designed a broadband high-bit terahertz encoding metasurface structure. Through the principle of far-field scattering, we designed the corresponding matrix encoding to realize the control of terahertz waves, that is, extending the simple one-dimensional direction encoding to two-dimensional simultaneous encoding. Based on the matrix mode coding method, the coding metasurface can realize single-beam abnormal reflection, double-beam abnormal reflection and multi-beam abnormal reflection. At the same time, through the rotation arrangement pattern, we can obtain the reflected vortex beam. Our design provides a more flexible and high-degree-of-freedom manipulation method for terahertz wavefront regulation. At the same time, the design band can also be extended to microwave and visible light bands..
Submitted at: July 1, 2022
Accepted at: April 5, 2023
FENG LIN, WENKANG HUANG, XUEJUN HE, CHENXIA LI, Anomalous reflection beam steering based on high-bit coding metasurfaces, Journal of Optoelectronics and Advanced Materials Vol. 25, Iss. 3-4, pp. 105-111 (2023)
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