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March 16, 2021 at 6:17 pm
Guilin Sun
Ansys Employee问:General下列项目的意义phase(degrees),angle theta (degrees),angle phi (degrees),以及polarization angl (degrees)?
A:phase(degrees)是指该光源的初始位相;
angle theta (degrees)是入射光的俯仰角
angle phi (degrees) 是指入射光的方位角
这两个角度的意义参见 这个帖子的解释
这两个角不能互相代替,但是通过polarization angle 可以有不同的方法设置同样的入射光。
polarization angle (degrees)是指光源的偏振角。在FDTD仿真中,激励光源都是偏振的,而且一般的光束光源(平面波、TFSF、高斯和模式)都是线偏振的,要得到圆偏振光需要 根据定义设置 ,而要得到非偏振和非相干光的结果,一般需要仿真一个以上的偏振结果然后作 非相干叠加 。
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