finesse.solutions.beamtrace.PropagationSolution.q

PropagationSolution.q(at) → BeamParam

Beam parameter at a given node of the path.

Parameters:

atOpticalNode or str

The location in the path at which to get the beam parameter. This can be an optical node or the name of the optical node.

Returns:

qBeamParam

The beam parameter corresponding to the specified node.

Raises:

keKeyError

If at is a node which does not exist within the solution.

veValueError

If at is a string corresponding to a node which doesn’t exist in the associated model.

teTypeError

If at is not an OpticalNode or a string.