If I want to set the amplitude of the source, how should I operate ?

[xungu1]

I want to change the amplitude to see the change of the electromagnetic field after the simulation of the grating by meent, or as I think, the amplitude is only the value of the electromagnetic field is scaled ? Another question is how do I see the phase change ? For example, I simulate a one-dimensional grating, how should I view its phase change ?

[yonghakim]

Hi,

1. the amplitude of incident light is set to 1.

2. Field returned by Meent is array of complex numbers. I think you can use numpy.angle() to find phase. Is this what you are looking for?