TY - JOUR
T1 - Ultrathin planar chiral metasurface for controlling gradient phase discontinuities of circularly polarized waves
AU - Liu, Yahong
AU - Zhou, Xin
AU - Song, Kun
AU - Wang, Mei
AU - Zhao, Xiaopeng
N1 - Publisher Copyright:
© 2015 IOP Publishing Ltd.
PY - 2015/9/16
Y1 - 2015/9/16
N2 - 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.
AB - 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.
KW - chiral metamaterials
KW - gradient phase discontinuities
KW - metasurface
KW - transmission properties
UR - http://www.scopus.com/inward/record.url?scp=84940396852&partnerID=8YFLogxK
U2 - 10.1088/0022-3727/48/36/365301
DO - 10.1088/0022-3727/48/36/365301
M3 - 文章
AN - SCOPUS:84940396852
SN - 0022-3727
VL - 48
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
IS - 36
M1 - 365301
ER -