rcwa API¶
There are four main user-facing classes: Solver, Layer, LayerStack, Source, Material, Crystal, and Plotter. The Layer class is used to set up the individual simulation layers and define their properties, including thickness, material properties, and crystal structures (if applicable). The Material class can be passed into the Layer class to define a layer whose material properties are dependent on refractive index. The Crystal class is used to define layers which are periodic in x and y, and is also passed into the Layer class. Once all individual layers are constructed, they are used to create a LayerStack, which contains information about which region is considered the “incident” region and which is the “transmission” region (both are semi-infinite).
The Source class is used to define the excitation source - the wavelength, polarization, and incident angle.
Once the user has created a Source and LayerStack class, these are passed into the Solver class, which then runs the simulation, and makes the results available as a dictionary Solver.results.