A small Julian DSL for defining electrical fields, chiefly for use in atomic physics calculations.
It is not intended to be used in the computations of, but rather with electric fields, i.e. the electric fields are input parameters to (boundary terms of) a time-dependent calculation. Furthermore, the fields are not solutions to the full Maxwell equations, but to the paraxial approximation, which means that they are propagating along one direction and polarized in a plane transverse to the direction of propagation. One may however add multiple fields propagating in different directions forming a field vector that is not confined to a single plane.