Ultrathin planar chiral metasurface for controlling gradient phase discontinuities of circularly polarized waves

Yahong Liu, Xin Zhou, Kun Song, Mei Wang, Xiaopeng Zhao

科研成果: 期刊稿件文章同行评审

18 引用 (Scopus)

摘要

We develop a gradient phase discontinuities ultrathin planar metasurface based on chiral branched gammadion structure (CBGS) that provides extreme control of electromagnetic wavefronts across single-sheet design. The introduction of the branch can provide antiparallel magnetic moment, which tunes the chirality of the CBGS. In the CBGS metasurface, the transmission phase of a circularly polarized wave can be varied from -180° to +180°. We experimentally demonstrate a beam-refracting CBGS metasurface with refracting a normally incident plane wave to an angle of 17°. The performances of the proposed metasurface at oblique incidence are also presented. The CBGS metasurface can find a wide range of applications over the entire electromagnetic spectrum including single-surface lenses, fully controlling light in direction, and polarization controlling devices.

源语言英语
文章编号365301
期刊Journal of Physics D: Applied Physics
48
36
DOI
出版状态已出版 - 16 9月 2015

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