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JUNLING HAN1,*
Metal-based beam splitters limit device efficiency. In order to improve the beam splitter efficiency and reduce the ohmic loss of metal materials, we propose to use all-dielectric materials to design a terahertz beam splitter. Moreover, it is an effective way to design beam splitters using all-dielectric metamaterial structures. With the rapid development of digital technology, it is difficult for traditional analog metamaterials to digitally control electromagnetic information. We propose the use of encoded metamaterial structures to realize the design of terahertz beam splitters. Different encoding modes can control different scattering angles of the beam splitter. Using all-dielectric encoding metasurfaces, we design a transmissive terahertz beam splitter and a reflective beam splitter. It is generally believed that the design of reflective beam splitters requires a metal layer to improve the reflection efficiency, however, the loss of metal materials is also inevitable. We use the all-dielectric encoded metamaterial structure to design a reflective beam splitter, which makes it possible to use the all-dielectric structure to design a reflective device.
Metasurface, Splitter, Encoding.
JUNLING HAN, Design and analysis of beam splitter based on all-dielectric encoding metasurface, Optoelectronics and Advanced Materials - Rapid Communications, 16, 11-12, November-December 2022, pp.491-500 (2022).
Submitted at: June 21, 2022
Accepted at: Dec. 5, 2022
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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