Resonance Expansion

The geometry is as in the parent example but the resonance mode solver is used to compute the eigenmodes near the resonant frequency.


The Drude material model is fully taken into account by the resonance solver.

Logarithmic plots of the intensities of the two computed resonances
mode1 mode2

Resonance expansion

The computed resonances can be used to approximate a scattering problem as defined in parent example by an expansion into resonance modes, see example drivers in the sub-folder data_analysis. Running a wavelength scan for the resonance expansion approximation yields nearly identically decay rates as for the scattering problem:


Spontaneous decay rates as computed by the resonance expansion.