Terahertz metamaterial beam splitters based on untraditional coding scheme
KAUST DepartmentPhysical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
Materials Science and Engineering Program
Physical Sciences and Engineering (PSE) Division
KAUST Grant NumberCRF-2016-2950-CRG5, URF/1/2950
Permanent link to this recordhttp://hdl.handle.net/10754/656927
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AbstractTerahertz waves have attracted considerable research interest in recent years because of their potential applications in diverse fields. As an important device to control terahertz waves, beam splitters with greater flexibility and higher degrees of freedom are highly desirable. In order to obtain higher degrees of freedom in beam splitting, 2-bit or higher-bit coding elements are usually introduced into metamaterial beam splitters based on the coding theory. In this work, a new “offset” coding scheme using only the 1-bit coding elements of “0” and “1” is presented, and the period of coding for beam splitting can be a non-integer multiple of the length of a single unit rather than only its integer multiples. Therefore, more beam-splitting degrees of freedom can be obtained, and the design strategy is experimentally verified. We believe that the new coding scheme will also be of significance in radar cross section reduction and flexible wave control.
CitationXing, X., Li, Y., Lu, Y., Zhang, W., Zhang, X., Han, J., & Zhang, W. (2019). Terahertz metamaterial beam splitters based on untraditional coding scheme. Optics Express, 27(20), A1627. doi:10.1364/oe.27.0a1627
SponsorsNational Key Research and Development Program of China (2017YFA0701004); Tianjin Municipal Fund for Distinguished Young Scholars (18JCJQJC45600); National Natural Science Foundation of China (61420106006, 61422509, 61427814, 61505146, 61735012, 61775159); King Abdullah University of Science and Technology (CRF-2016-2950-CRG5, URF/1/2950). We thank Dr. Quanlong Yang for illuminating discussions.
PublisherThe Optical Society