Self-complementary metasurfaces for designing terahertz deflecting circular-polarization beam splitters

Metasurfaces provide a broad range of functionalities related to wavefront manipulation in different frequency ranges with the advantage of subwavelength thickness. In this work, we numerically and experimentally investigate a terahertz splitter of circularly polarized beams based on a spatially non...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2021-03, Vol.118 (13)
Main Authors: Kuznetsov, S. A., Lenets, V. A., Tumashov, M. A., Sayanskiy, A. D., Lazorskiy, P. A., Belov, P. A., Baena, J. D., Glybovski, S. B.
Format: Article
Language:English
Subjects:
Applied physics
Beam splitters
Beams (radiation)
Circular polarization
Design parameters
Frequency ranges
Linear phase
Metasurfaces
Terahertz frequencies
Wave fronts
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Metasurfaces provide a broad range of functionalities related to wavefront manipulation in different frequency ranges with the advantage of subwavelength thickness. In this work, we numerically and experimentally investigate a terahertz splitter of circularly polarized beams based on a spatially nonuniform metasurface composed of self-complementary unit cells. When illuminated with circular polarization, the metasurface creates a deflected cross-polarized beam while transmitting a co-polarized beam in the normal direction. Despite the existence of two reflected beams leading to reflective losses, the metasurface is single-layer and is easy to design and fabricate. A required linear phase gradient for the cross-polarized beam can be obtained by adjusting only one design parameter of unit cells.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0042403