FDTD simulation on the interaction between gaussian beam and biaxial anisotropic metamaterial slabs
FDTD simulation on the interaction between gaussian beam and biaxial anisotropic metamaterial slabs
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DOI：
10.1007/s10762-007-9316-7
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发表时间：
2008-02-01
期刊：
影响因子：
--
通讯作者：
Feng, Jian
中科院分区：
文献类型：
--
作者：
Wang, Maoyan;Wu, Jian;Feng, Jian
采用时域有限差分法（FDTD）中的辅助微分方程方法，模拟了高斯光束与不确定各向异性超材料（AMM）平板的相互作用。研究了三种AMM板的波矢方向和能流密度。给出了高斯光束与AMM板相互作用时TE偏振波的光强分布和相位。数值结果表明，AMM相对渗透率张量的x分量的符号决定了折射的规则性或反常性，而AMM相对渗透率张量的z分量的符号决定了能量流的正折射或负折射。还示出了与总截留培养基相关的正或负古斯-汉臣位移。
The interaction between Gaussian beam and indefinite anisotropic metamaterial (AMM) slabs are simulated with auxiliary differential equation method in finite-difference time-domain method (FDTD). The directions of wave vector and energy flow densities in three types of AMM slabs are investigated. The field intensity distributions and phases of TE-polarized wave for the interaction between Gaussian beam and AMM slabs are given. Numerical results show that the sign of x component of relative permeability tensor of AMM determines the refraction is regular or anomalous, whereas the sign of z component of relative permeability tensor of AMM determines the energy flow is positively refracted or negatively refracted. Positive or negative Goos-Hanchen shift associated with Total Cutoff media are also shown.