Abstract-Metasurfaces: Terahertz Broadband Low-Reflection Metasurface by Controlling Phase Distributions

                             

1. Di Sha Dong¹, 
2. Jing Yang², 
3. Qiang Cheng^1,*, 
4. Jie Zhao¹, 
5. Li Hua Gao¹, 
6. Shao Jie Ma³, 
7. Shuo Liu¹, 
8. Hai Bin Chen¹, 
9. Qiong He³,
10. Wei Wei Liu², 
11. Zheyu Fang⁴, 
12. Lei Zhou³and
13. Tie Jun Cui^1,*

Article first published online: 20 OCT 2015

DOI: 10.1002/adom.201570065

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA

http://onlinelibrary.wiley.com/doi/10.1002/adom.201570065/abstract

A single-layered metasurface is proposed by Q. Cheng, T. J. Cui, and co-workers to realize broadband diffusion at terahertz frequencies based on the destructive interference from a number of sub-wavelength elements. On page 1405, two kinds of elements are used to achieve full phase range and a linear phase response. The scattered waves can be efficiently manipulated to disperse into nearly all directions, resulting in extremely low back-scattering. The metasurface shows excellent angular independence toward incident waves across a broad spectrum.