当等离子体共振效应存在时，Pabs分析组计算吸收还可行吗？

#1

From Maxwell’s equations, we know that the field component normal to the structure surface will be discontinuous at the interface. Also, it is obvious that interpolating near a discontinuity can lead to errors. In the absorption calculations, the interpolation error typically makes the electric field just inside the absorbing material much larger than it really is. Since absorption is proportional to electric field intensity, this will tend to overestimate the total absorption.

Note that these errors only occur for the mesh cells which cross the material interface. If the absorption in the mesh cells that cross the interface is a small fraction of the total absorption, then the overall error will be small. However, if most of the absorption is concentrated near the surface (as is the case with metals), then the overall error can be significant.

#2

1描述结果的时候，最好贴图。

2 我做过有spp 参与的 周期结构 的吸收的，Pabs 小于等于1 ，这个值和用1-Reflection-Transmission的结果相同。

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#6

PML的距离和层数我都做了sweep了，并不是它的问题。网格精度的话，我是手动设置网格，因为是三维的仿真，所有网格没办法做的太小。

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