Simultaneous Control of Light Polarization and Phase Distributions Using Plasmonic Metasurfaces
Simultaneous Control of Light Polarization and Phase Distributions Using Plasmonic Metasurfaces
复制标题
使用等离子体超表面同时控制光偏振和相位分布
DOI：
10.1002/adfm.201403669
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发表时间：
2015-02-04
影响因子：
19
通讯作者：
Tian, Jianguo
中科院分区：
文献类型：
--
作者：
Li, Jianxiong;Chen, Shuqi;Tian, Jianguo
利用光进行现代光子应用通常涉及光偏振和相位的控制和操纵。传统方法需要组合多个分立的光学元件，每个元件都贡献特定的功能。在这里，提出了等离子体超表面来实现对透射光的偏振和相位的同时操纵。可以获得光学相位和偏振方向的任意空间场分布。通过沿着界面引入恒定的相位梯度，展示具有可控线性偏振的宽带近乎完美的反常折射，从而验证了多功能超表面。此外，通过生成径向偏振光束证明了所提出的超表面的能力。超表面的新自由度有利于对光的任意操纵，并将深刻影响广泛的光子应用。
Harnessing light for modern photonic applications often involves the control and manipulation of light polarization and phase. Traditional methods require a combination of multiple discrete optical components, each of which contributes to a specific functionality. Here, plasmonic metasurfaces are proposed that accomplish the simultaneous manipulation of polarization and phase of the transmitted light. Arbitrary spatial field distribution of the optical phase and polarization direction can be obtained. The multifunctional metasurfaces are validated by demonstrating a broadband near‐perfect anomalous refraction with controllable linear polarization through introducing a constant phase gradient along the interface. Furthermore, the power of the proposed metasurfaces is demonstrated by generating a radially polarized beam. The new degrees of freedom of metasurfaces facilitate arbitrary manipulation of light and will profoundly affect a wide range of photonic applications.