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arXiv 0912.4288physics.optics
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相变硫系玻璃超材料

Phase-change chalcogenide glass metamaterial

Z. L. Samson, K. F. MacDonald, F. De Angelis, K. Knight, C. C. Huang, E. Di Fabrizio, D. W. Hewak, N. I. Zheludev

摘要:

将超材料与功能介质相结合,为其性能带来了新的维度。在这里,我们展示了大量的谐振频率调谐的光子超材料与电/光可切换硫族玻璃杂交。无定形和结晶形式之间的转变带来了非对称开口环阵列的近红外共振波长的10%的偏移,在亚波长厚度的器件中提供了对比度为4:1的透射调制功能。

英文摘要:

Combining metamaterials with functional media brings a new dimension to their performance. Here we demonstrate substantial resonance frequency tuning in a photonic metamaterial hybridized with an electrically/optically switchable chalcogenide glass. The transition between amorphous and crystalline forms brings about a 10% shift in the near-infrared resonance wavelength of an asymmetric split-ring array, providing transmission modulation functionality with a contrast ratio of 4:1 in a device of sub-wavelength thickness.

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