legume.PlaneWaveExp.get_eps_xy¶
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PlaneWaveExp.
get_eps_xy
(Nx=100, Ny=100, z=0)¶ Get the xy-plane permittivity of the layer as computed from an inverse Fourier transform with the PWE reciprocal lattice vectors.
Parameters: - Nx (int, optional) – A grid of Nx points in the elementary cell is created.
- Ny (int, optional) – A grid of Ny points in the elementary cell is created.
- z (float, optional) – Position of the xy-plane. This doesn’t matter for the PWE, but is added for consistency with the GME definitions.
Returns: - eps_r (np.ndarray) – The in-plane real-space permittivity.
- xgrid (np.ndarray) – The constructed grid in x.
- ygrid (np.ndarray) – The constructed grid in y.