finesse.detectors.optimal_q.OptimalQ
¶
Overview
- class finesse.detectors.optimal_q.OptimalQ(name, node: Node, f, *, fix_spot_size=False, astigmatic=False, accuracy=1e-06, direction='both')[source]¶
Bases:
Detector
This detector tries to compute an optimal beam parameter (q) for a specified optical frequency at a node.
Output of this detector into an array solution will be a tuple of
BeamParam
in each transverse direction, (qx, qy). If the optimisation process fails beam parameter objects will NaN values will be returned.- Parameters:
- namestr
Name of the detector
- node[str | finesse.components.node]
Node name or object to put this detector at
- ffloat
Frequency component tro compute the optimal beam parameter for.
- fix_spot_sizebool, optional
When True the optimised will keep the current spot size at the node fixed and just optimise the curvature.
- astigmaticbool, optional
When True qx and qy will be optimised separately
- accuracyfloat, optional
Approximate mismatch accuracy to try and compute the optimised beam parameter to. mismatch(q_actual, q_optimal) < accuracy
- directionstr, optional
Return either both or just the x or y modes
Notes
This method uses the
finesse.gaussian.optimise_HG00_q()
oroptimise_HG00_q()
for optimising the HG mode amplitudes at the node and frequency requested. This particular method finds a new set of {qx, qy} values which maximise the HG00 mode content, whilst reducing the HG20 and HG02 mode content.Failure
If the optical field being optimised does not have a HG00 like appearance then. For example, trying to optimise the shape of an RF sideband field inside a cavity that it is not resonant in.
Properties
Sets the output of the detector. |