论文标题
使用复合偶联的杆子对模型在电动力晶格玻璃体方法中建模散色银
Modeling dispersive silver in the electrodynamic lattice-Boltzmann method using complex-conjugate pole-residue pairs
论文作者
论文摘要
将宽带电动力晶格玻尔兹曼方法（ELBM）的极化密度推广，以表示与电磁波相互作用的材料的频率分散。依赖频率的折射率和灭绝系数是使用辅助分化方程（ADE）中的复合偶联物叠置对模拟的。在单个晶格上评估电场和磁场，以确保稳定的数值溶液直至Nyquist极限。将ELBM的电场和磁场与有限差分域（FDTD）方法的电场和磁场进行比较。从0.125-5 eV的光子能量的宽带dirac-delta波功能的传输功率谱中提取100 nm银平板的精确透射率。鉴于此功能，具有ADE的ELBM是对材料的宽带频率分散建模的准确且计算上有效的方法。
The polarization density of a broadband electrodynamic lattice-Boltzmann method (ELBM) is generalized to represent frequency-dispersion of materials interacting with electromagnetic waves. The frequency-dependent refractive index and extinction coefficient are modeled using complex-conjugate pole-residue pairs in an auxiliary-differential-equation (ADE). Electric and magnetic fields are evaluated on a single lattice, ensuring a stable numerical solution up to the Nyquist limit. The electric and magnetic fields from the ELBM are compared with the electric and magnetic fields from the finite-difference-time-domain (FDTD) method. Accurate transmittance of a 100 nm silver slab is extracted from the transmitted power spectrum of a broadband Dirac-delta wave-function for photon energies ranging from 0.125-5 eV. Given this capability, the ELBM with an ADE is an accurate and computationally efficient method for modeling broadband frequency-dispersion of materials.
