Experimental determination of a surface wave at the one-dimensional photonic crystal-metal interface
Experimental determination of a surface wave at the one-dimensional photonic crystal-metal interface
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DOI：
10.1364/josab.25.001016
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发表时间：
2008-06
影响因子：
1.9
通讯作者：
A. Ramírez-Duverger;J. Gaspar-Armenta;R. García-Llamas
中科院分区：
文献类型：
--
作者：
A. Ramírez-Duverger;J. Gaspar-Armenta;R. García-Llamas
据我们所知，首次在实验上证实了一维光子晶体（PC）-金属界面表面波的存在。该表面模式被激发为横向电和横向磁极化的频率区域中的PC的带隙之一重叠的频率波矢量空间中的金属的等离子体频率之下的区域，甚至在垂直入射从真空观察。对于固定的频率，它的角位置对邻近金属的一维光子晶体层的厚度非常敏感。
For the first time, to the best of our knowledge, the existence of a surface wave at the one-dimensional photonic crystal (PC)-metal interface is verified experimentally. That surface mode is excited for both transverse electric and transverse magnetic polarizations in the frequency region where one of the bandgaps of the PC overlaps with the region below the plasma frequency of the metal in the frequency wave-vector space and is observed even under normal incidence from vacuum. For a fixed frequency its angular position is very sensitive to the thickness of the one-dimensional photonic-crystal layer adjacent to the metal.