论文标题
入射脉冲宽度对电磁脉冲散射中介电跃迁层的影响 - 量子晶格算法模拟
The effect of the width of the incident pulse to the dielectric transition layer in the scattering of an electromagnetic pulse -- a quantum lattice algorithm simulation
论文作者
论文摘要
将折射率$ n_1 $与索引$ n_2 $的另一个材料连接到介电边界层的厚度的效果是用于传播电磁脉冲的。对于非常薄的边界层，从菲涅尔跳跃条件下发现的脉冲模拟物的散射特性 - 除了向入射振幅的传输增加了$ \ sqrt {n_2/n_1} $的倍数。随着边界层变得越来越厚，人们发现偏离菲涅尔条件的偏差，并最终接近WKB的传播。但是，在及时持续的一部分脉冲中发现了一个小但不寻常的倾角。所使用的量子晶格算法（QLA）将麦克斯韦方程恢复到小参数中的二阶 - 但是当此参数是统一时，QLA仍然会恢复Maxwell方程。扩展参数是中等$ n_1 $中脉冲的速度。
The effect of the thickness of the dielectric boundary layer that connects a material of refractive index $n_1$ to another of index $n_2$ is considered for the propagation of an electromagnetic pulse. For very thin boundary layer the scattering properties of the pulse mimics that found from the Fresnel jump conditions for a plane wave - except that the transmission to incident amplitudes are augmented by a factor of $\sqrt{n_2/n_1}$. As the boundary layer becomes thicker one finds deviations away from the Fresnel conditions and eventually one approaches WKB propagation. However there is found a small but unusual dip in part of the transmitted pulse that persists in time. The quantum lattice algorithm (QLA) used recovers the Maxwell equations to second order in a small parameter -- but QLA still recovers Maxwell equations when this parameter is unity. The expansion parameter is the speed of the pulse in medium $n_1$.
