Ansys Insight: Purcell factor calculations with an ultrafine mesh

kjohnsonkjohnson Ansys Employee Posts: 13

In general, Purcell factor calculations can be performed by taking the ratio of the results from the dipolepower and sourcepower script commands in a Lumerical FDTD simulation, as demonstrated in this example:

However, with ultrafine FDTD meshes on the order of λ/1000 at the location of the dipole, the results from the dipolepower script command may not be accurate. In this case, a box of Frequency-domain Profile and Power monitors placed around the dipole should be used to calculate the power radiated by the dipole instead of the dipolepower script command. This approach is demonstrated in this example (see the "Box monitor vs. dipolepower" section):

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