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Plot of NormE
Posted Jan 16, 2021, 1:10 p.m. EST Wave Optics Version 5.5 1 Reply
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Hello.
I am new at comsol. I am trying a very simple simulation. I want to see the propagation of the plane wave(TE polarized) in air medium at various incident angles. So when I model the problem, I am facing a problem while plotting the normE. The component of the electric field gives the expected result( wave like paatern) while normE looks a bit strange. Also the pattern of normE changes with change in inident angle. So can you help me understanding this behaviour. Why the normE is not appeared as a wave in the figures while the electric field appered as a wave.
Here I am attaching the line plots for both norE and one of field componet and also .mph file for my model.
Thank you.
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Although I haven't looked at your files, I can tell you that the norm of E for a wave generally doesn't look like a wave unless you have a standing wave present. For a simple propagating wave in any particular direction, the norm of E changes only more gradually from place to place. If you recall (or simply look up) the definition of the the norm of E, you should immediately see why this is the case. (Hint: Consider the wave in exponential form, with an amplitude term times an exp (j k r) term. Notice how taking the norm eliminates the exp (j k r) term? Well, there you go!)
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