CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Polarization-controlled asymmetric excitation of surface plasmons
Xu, Q; Zhang, XQ; Yang, QL; Tian, CX; Xu, YH; Zhang, JB; Zhao, HW; Li, YF; Ouyang, CM; Tian, Z; Gu, JQ; Zhang, XX; Han, JG; Zhang, WL
Source PublicationOPTICA
AbstractFree-space light can be coupled into propagating surface waves at a metal -dielectric interface, known as surface plasmons (SPs). This process has traditionally faced challenges in preserving the incident polarization information and controlling the directionality of the excited SPs. The recently reported polarization-controlled asymmetric excitation of SPs in metasurfaces has attracted much attention for its promise in developing innovative plasmonic devices. However, the unit elements in these works were purposely designed in certain orthogonal polarizations, i.e., linear or circular polarizations, resulting in limited two-level polarization controllability. Here, we introduce a coupledmode theory to overcome this limit. We demonstrated theoretically and experimentally that, by utilizing the coupling effect between a pair of split-ring-shaped slit resonators, exotic asymmetric excitation of SPs can be obtained under the x-, y-, left-handed circular, and right-handed circular polarization incidences, while the polarization information of the incident light can be preserved in the excited SPs. The versatility of the presented design scheme would offer opportunities for polarization sensing and polarization-controlled plasmonic devices. (C) 2017 Optical Society of America
KeywordAntenna Metamaterials Nanoantenna Generation Microscopy Principle Resonance Efficient
Indexed BySCI
WOS IDWOS:000411226800008
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Document Type期刊论文
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GB/T 7714
Xu, Q,Zhang, XQ,Yang, QL,et al. Polarization-controlled asymmetric excitation of surface plasmons[J]. OPTICA,2017,4(9):1044-1051.
APA Xu, Q.,Zhang, XQ.,Yang, QL.,Tian, CX.,Xu, YH.,...&Zhang, WL.(2017).Polarization-controlled asymmetric excitation of surface plasmons.OPTICA,4(9),1044-1051.
MLA Xu, Q,et al."Polarization-controlled asymmetric excitation of surface plasmons".OPTICA 4.9(2017):1044-1051.
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