finesse.detectors.gouy module

Accumulated Gouy phase detector.

class finesse.detectors.gouy.Gouy(*args, **kwargs)

Bases: Detector

Detector to measure the accumulated gouy phase across a sequence of spaces.

This detector can operate in one of two modes, depending upon args given:

• automatically determine the spaces through an arbitrary path by specifying the from_node and to_node arguments,

• OR provide a pre-determined sequence of spaces (or their names) as positional arguments.

Whichever option is chosen, this detector will compute the same fundamental quantity; that is the sum of the Gouy phases accumulated over each space (in degrees).

Parameters

namestr

Name of newly created gouy detector.

*argssequence

A sequence of spaces or space names.

from_nodenode-like

An OpticalNode instance, or a data type which can be converted to an optical node.

to_nodenode-like

An OpticalNode instance, or a data type which can be converted to an optical node.

via_nodenode-like

An OpticalNode instance, or a data type which can be converted to an optical node or a sequence of the these types.

directionstr

Plane to detect in - ‘x’ for tangential, ‘y’ for sagittal. Defaults to ‘x’.

property needs_fields

Flag indicating whether the detector requires light fields (i.e. solving of the interferometer matrix).

property needs_trace

Flag indicating whether the detector requires beam traces.

property spaces

The spaces that this detector will calculated the accumulated Gouy phase over.