exceptions.PropagationInstabilityError

exceptions.PropagationInstabilityError(
    message,
    z=None,
    suggested_z_steps_inner=None,
)

Raised when a propagation solve has blown up numerically.

The field became non-finite or grew far beyond its initial amplitude, or the master-equation integrator failed, which is the usual signature of a z-step (or t-step) too coarse for the finite-difference scheme. Increase z_steps_inner (or z_steps) or t_steps, or pass z_steps_inner="auto". Pass check_stability=False to solve() to suppress the check.

Attributes

Name	Type	Description
z		Position at which the solve was stopped.
suggested_z_steps_inner		A larger z_steps_inner to try, or None.