Zhao Li-Ming, Wang Xue-Hua, Gu Ben-Yuan, Yang Guo-Zhen
Institute of Physics, Chinese Academy of Sciences, P. O. Box 603, Beijing, China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Aug;72(2 Pt 2):026614. doi: 10.1103/PhysRevE.72.026614. Epub 2005 Aug 31.
Green's tensors for photonic crystal (PC) slabs are numerically solved by the coupled-dipole approximation (CDA) technique. The obtained components of Green's tensors satisfy discontinuous or continuous conditions at interfaces of scatterers. This shows that the CDA technique is very applicable to studying the properties of PC slabs. Green's tensors exhibit obviously periodic oscillation with the increase of the number of scatterers; furthermore, the effect of each scatterer on Green's tensors displays a localization feature in the sample containing one row of scatterers; on the contrary, this localized effect disappears in the sample consisting of multiple rows of scatterers.
通过耦合偶极近似（CDA）技术对光子晶体（PC）平板的格林张量进行了数值求解。所得到的格林张量分量在散射体界面处满足不连续或连续条件。这表明CDA技术非常适用于研究PC平板的特性。随着散射体数量的增加，格林张量呈现出明显的周期性振荡；此外，在包含一排散射体的样品中，每个散射体对格林张量的影响表现出局域化特征；相反，在由多排散射体组成的样品中，这种局域化效应消失。
