title: Broadband metasurfaces with simultaneous control of phase and amplitude.
abstract: By combining the freedom of both the structural design and the orientation of split ring resonator antennas, we demonstrate terahertz metasurfaces that are capable of controlling both the phase and amplitude profiles over a very broad bandwidth. As an example, we show that the phase-amplitude metasurfaces can be engineered to control the diffraction orders arbitrarily.
authors.affiliation: School of Physics & Astronomy, University of Birmingham, Birmingham, B15 2TT, UK; Institute of Solid State Physics, Shanxi Datong University, Datong, 037009, China.
authors.forename: Lixiang
authors.initials: L
authors.lastname: Liu
authors.forename: Xueqian
authors.initials: X
authors.lastname: Zhang
authors.forename: Mitchell
authors.initials: M
authors.lastname: Kenney
authors.forename: Xiaoqiang
authors.initials: X
authors.lastname: Su
authors.forename: Ningning
authors.initials: N
authors.lastname: Xu
authors.forename: Chunmei
authors.initials: C
authors.lastname: Ouyang
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Shi
authors.forename: Jiaguang
authors.initials: J
authors.lastname: Han
authors.forename: Weili
authors.initials: W
authors.lastname: Zhang
authors.forename: Shuang
authors.initials: S
authors.lastname: Zhang
mesh_terms: D004560:Electricity; D004738:Engineering; D044367:Phase Transition; D013499:Surface Properties
keywords: Metasurfaces; diffraction; metamaterials; refraction; terahertz