A flat metamaterial lens working in reflection geometry

Author

Xin Li ; Shiyi Xiao ; Bengeng Cai ; Qiong He ; Tie Jun Cui ; Lei Zhou

Author_Institution

State Key Lab. of Surface Phys. & Key Lab. of Micro & Nano Photonic Struct. (Minist. of Educ.), Fudan Univ., Shanghai, China

fYear

2012

fDate

8-10 Oct. 2012

Firstpage

1

Lastpage

2

Abstract

We show that a flat metasurface with a parabolic reflection-phase distribution can focus an impinging plane wave to a point image in reflection geometry. Our system is much thinner than conventional geometric-optics devices, and does not suffer the energy-loss issues encountered by many metamaterial devices working in transmission geometry. We designed realistic microwave samples and performed near-field scanning experiments to verify the focusing effect. Experimental results are in excellent agreement with full wave simulation and theoretical analyses.

Keywords

electromagnetic wave reflection; geometrical optics; microwave metamaterials; energy-loss; flat metamaterial lens; flat metasurface; focusing effect; full wave simulation; geometric-optics devices; impinging plane wave; metamaterial devices; near-field scanning experiments; parabolic reflection-phase distribution; point image; reflection geometry; transmission geometry; Finite difference methods; Focusing; Geometry; Lenses; Reflection; Surface waves; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Metamaterials (Meta), 2012 International Workshop on

Conference_Location

Nanjing

Print_ISBN

978-1-4673-2807-4

Type

conf

DOI

10.1109/META.2012.6464950

Filename

6464950