Terahertz metamaterial beam splitters based on untraditional coding scheme

Type
Article

Authors
Xing, Xiaohua
Li, Yanfeng
Lu, Yongchang
Zhang, Wentao
Zhang, Xixiang
Han, Jiaguang
Zhang, Weili

KAUST Department
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division

KAUST Grant Number
CRF-2016-2950-CRG5, URF/1/2950

Online Publication Date
2019-09-25

Print Publication Date
2019-09-30

Date
2019-09-25

Abstract
Terahertz 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.

Citation
Xing, 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

Acknowledgements
National 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.

Publisher
The Optical Society

Journal
Optics Express

DOI
10.1364/oe.27.0a1627

Additional Links
https://www.osapublishing.org/abstract.cfm?URI=oe-27-20-A1627

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