Angular resolved effective optical properties of a Swiss cross metamaterial

Angular resolved effective optical properties of a Swiss cross metamaterial
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瑞士十字超材料的角分辨有效光学特性

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发表时间：
2009
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通讯作者：
F. Lederer
F. Lederer
中科院分区：
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作者：
C. Menzel;C. Helgert;J. Üpping;C. Rockstuhl;E. Kley;R. Wehrspohn;T. Pertsch;F. Lederer

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我们从实验和理论两方面研究了斜入射时瑞士十字超材料的有效光学特性，并揭示了它们的角度依赖性。测量和计算数据之间几乎完美的协议。结果表明，负折射的谱域和角域以及负折射的强度强烈依赖于光的传播方向和偏振态。我们的研究结果清楚地表明，瑞士交叉超材料的有效材料参数的描述是不可能的。
We both experimentally and theoretically study the effective optical properties of a Swiss cross metamaterial at oblique incidence and reveal their angular dependence. Almost perfect agreement between measured and calculated data is achieved. We show that the spectral and angular domains of negative refraction as well as its strength depend strongly on the light’s propagation direction and polarization state. Our results clearly indicate that a description of a Swiss cross metamaterial in terms of effective material parameters is impossible.