Unless we use very gentle background profiles, there is a discontinuity in \Psi when entering and leaving the plasma. Should implement the generalised Snell's law (matching boundary conditions). Poli has a paper on this.
Can also probably just using vacuum propagation (Riccati thingy from Pereverzev) to go straight from launch to the edge of the plasma.
Unless we use very gentle background profiles, there is a discontinuity in \Psi when entering and leaving the plasma. Should implement the generalised Snell's law (matching boundary conditions). Poli has a paper on this.
Can also probably just using vacuum propagation (Riccati thingy from Pereverzev) to go straight from launch to the edge of the plasma.