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TE and TM Port excitation

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Dear all,

I set up a simulation for a plane-wave incident on an interface (see e.g. first part of "Scattering on a Substrate" COMSOL tutorial).

I would like to have an input E field on the port with is mixture of TE and TM polarizations. I was trying to define the case with xz as incidence plane and plane wave propagating toward -z direction. I set k=(k*sin(theta),0,-k*cos(theta)) with theta the angle of incidence and on the ports I set all three components of E (Ex,Ey,Ez) as
Ex=sin(theta)*cos(phi)*exp(-i*k*x)
Ey=sin(phi)*exp(-i*k*x)
Ez=cos(theta)*cos(phi)*exp(-i*k*x)
where phi is the angle of E vector with the xz-plane.

It looks that there is a problem when I define a E field vector with a normal component to the port because I so not obtain the analytical results. Did any of you encountered this problem?
Thank you

Luca

0 Replies Last Post 07.07.2016, 10:00 GMT-4
COMSOL Moderator

Hello Luca Carletti

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