利用Drude-Lorentz 模型设定金属的介电常数和利用Debye-Lorentz设定纯水的介电常数-Drude-Lorentz model for the dielectric constant of metals and Debye-Lorentz model for the dielectric constant of pure water

利用散射矩阵编写的严格耦合波理论，可以用来计算多层光栅结构的光散射情况。其中，金属的介电常数用拟合方法得到。-The use of rigorous coupled-wave theory scattering matrix prepared, can be used to calculate the light scattering multilayer grating structure. Among them, the dielectric constant of the metal is