Magnitude and phse plots of E-field for NRI materials

Hello everybody,

Please look at the following two figures which are labeled as the plots for:
(a) E-field magnitude.
(b) E-field phase.
obtained by the HFSS simulation of negative refractive index (NRI) flat lens using effective medium.

Please help me how to plot these?

One more query, there is an option of Plane wave excitation in HFSS, how to use it? Is it having any role in plotting the given two figures? I am unable to find any illustration on these topics. Any help is appreciable.

Please help.

Thanks.