Hi, I've been using a supercell to represent a non-orthogonal lattice. I know I need to use two sources to counter the effects of band folding in reflection or transmission measurements, however I'm struggling to get the correct results out from simulations. The two (Gaussian) sources currently in the supercell are separated by a lattice vector, but I think the problem lies with the phase offset between them. Does anyone know how to correctly use a time delay between the two sources (or any other method) in order to create the correct phase offset for countering band folding?
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