Open AccessLow-reflection beam refractions by ultrathin Huygens metasurface
Author(s) -
Sheng Li Jia,
Xiang Wan,
Xiao Fu,
Yong Zhao,
Tie Jun Cui
Publication year - 2015
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4922062
Subject(s) - reflection (computer programming) , optics , beam (structure) , magnetic field , physics , fabrication , electric field , coupling (piping) , electromagnetic radiation , unit (ring theory) , optoelectronics , materials science , computer science , programming language , medicine , alternative medicine , mathematics education , mathematics , pathology , quantum mechanics , metallurgy
We propose a Huygens source unit cell to develop an ultrathin low-reflection metasurface, which could provide extreme controls of phases of the transmitted waves. Both electric and magnetic currents are supported by the proposed unit cell, thus leading to highly efficient and full controls of phases. The coupling between electric and magnetic responses is negligible, which will significantly reduce the difficulty of design. Since the unit cell of metasurface is printed on two bonded boards, the fabrication process is simplified and the thickness of metasurface is reduced. Based on the proposed unit cell, a beam-refracting metasurface with low-reflection is designed and manufactured. Both near-field and far-field characteristics of the beam-refracting metasurface are investigated by simulations and measurements, which indicate that the proposed Huygens metasurface performs well in controlling electromagnetic waves