Open AccessHighly efficient beam steering with a transparent metasurface
Author(s) -
Zeyong Wei,
Yang Cao,
Xiaopeng Su,
Zhe Gong,
Yang Long,
Hongqiang Li
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.010739
Subject(s) - beam steering , optics , finite difference time domain method , planar , materials science , broadband , beam (structure) , dielectric , phase modulation , classification of discontinuities , optoelectronics , physics , computer science , phase noise , mathematical analysis , computer graphics (images) , mathematics
We propose an ultra-thin planar metasurface with phase discontinuities for highly efficient beam steering. The effect benefits from the broadband transparency and flexible phase modulation of stacked metal/dielectric multi-layers that is perforated with coaxial annular apertures. Proof-of-principle experiments verify that an efficiency of 65% and a deflection angle of 18° at 10 GHz are achieved for the transmitted beam, which are also in good agreement with the finite-difference-method-in-time-domain (FDTD) simulations. The scheme shall be general for the design of beam-steering transmitters in all frequencies.