Lossless interface modes at the boundary between two periodic dielectric structures
Lossless interface modes at the boundary between two periodic dielectric structures
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DOI：
10.1103/physrevb.72.233102
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发表时间：
2005-12-01
影响因子：
3.7
通讯作者：
Malpuech, G
中科院分区：
文献类型：
--
作者：
Kavokin, AV;Shelykh, IA;Malpuech, G
光的Tamm态是在周围介质中指数衰减的无损耗界面模式。我们表明，它们可以形成在两个周期性介电结构之间的边界处，一个具有接近光波长的周期，另一个具有接近波长的两倍的周期。在界面层的顺序有一个至关重要的影响的Tamm状态。这些状态的面内色散是抛物线的，TE和TM偏振的有效质量略有不同，都是自由电子质量的10（-5）量级。
Tamm states of light are lossless interface modes decaying exponentially in the surrounding media. We show that they can be formed at the boundary between two periodical dielectric structures, one having a period close to the wavelength of light and another one having a period close to the double of the wavelength. The order of layers at the interface has a crucial effect on the Tamm states. The in-plane dispersion of these states is parabolic with effective masses slightly different for TE and TM polarizations, both of the order of 10(-5) of the free electron mass.