Resonant photon transport through metal-insulator-metal multilayers consisting of Ag and SiO(2)
Resonant photon transport through metal-insulator-metal multilayers consisting of Ag and SiO(2)
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DOI：
10.1103/physrevb.82.045410
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发表时间：
2010-07
影响因子：
3.7
通讯作者：
M. Yoshida;S. Tomita;H. Yanagi;S. Hayashi
中科院分区：
文献类型：
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作者：
M. Yoshida;S. Tomita;H. Yanagi;S. Hayashi
我们已经进行了实验和数值研究的共振光子输运通过Ag-SiO2-Ag多层膜与不同的SiO2间隙层的厚度，由于其对超材料超透镜的发展应用。用双棱镜系统和p偏振He-Ne激光器测量的光子输运谱表明，在全反射区有一个共振光子隧穿RPT峰，在传播区有一个附加峰。计算的色散曲线和电场分布表明，RPT峰是由反对称耦合的表面等离子体激元SPPs，非常类似的长程SPPs在一个单一的金属膜。然而，额外的峰值是由具有对称耦合SPP的TM导模引起的。我们证明了随着间隙层厚度的减小，TM 0导模从全反射区向传播区连续移动。这将使我们能够实现一种将倏逝波转换为传播光波的设备，从而打开了替代类型的超透镜的可能性。
We have conducted experimental and numerical studies on resonant photon transport through Ag-SiO2-Ag multilayers with varying SiO2 gap-layer thickness due to its application toward the development of a metamaterial superlens. Photon-transport spectra that have been measured using a double-prism system with a p-polarized He-Ne laser show a resonant photon tunneling RPT peak in the total reflection region and an additional peak in the propagating region. Calculated dispersion curves and electric field profiles reveal that the RPT peak is brought about by antisymmetrically coupled surface-plasmon polaritons SPPs , very similar to the long-range SPPs in a single-metal film. The additional peak, however, is caused by TM guided modes with symmetrically coupled SPPs. We demonstrate that the TM0 guided modes move continuously from the total reflecting region to the propagating region as the gap-layer thickness decreases. This will enable us to realize a device which converts evanescent waves into propagating waves of light, opening the possibility of an alternative type of hyperlens.