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Plasmonic metamaterial wave retarders in reflection by orthogonally oriented detuned electrical dipoles

机译:等离子超材料波阻滞剂在正交取向的失谐电偶极子中的反射

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摘要

We demonstrate that a pair of perpendicular electrical dipolar scatterers resonating at different frequencies can be used as a metamaterial unit cell to construct a nanometer-thin retarder in reflection, designing nanocross and nanobrick plasmonic configurations to function as reflecting quarter-wave plates at approx1520 and 770 nm, respectively. The design is corroborated experimentally with a monolayer of gold nanobricks, transforming linearly polarized incident radiation into circularly polarized radiation at approx780 nm.
机译:我们证明了一对在不同频率下共振的垂直电偶极散射体可以用作超材料单元,以构建反射中的纳米级延迟器,设计纳米交叉和纳米砖等离激元构型,以在大约1520和770处反射四分之一波片纳米。实验通过单层金纳米砖证实了该设计,将线性偏振入射辐射转换为约780 nm的圆偏振辐射。

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