Class GaussianBeam

source code

GaussianBeam class.

This class represents general astigmatic Gaussian beams in 3D space.
These are the objects that are intended to interact with the optical
components during the ray tracing and that are rendered in 3D thanks to
FreeCAD.

*=== Attributes ===*
BeamCount: class attribute, counts beams. [integer]
QTens: general astigmatic complex curvature tensor at the origin.
    [np. array of complex]
N: Refraction index of the medium in which the beam is placed. [float]
Wl: Wave-length in vacuum of the beam (frequency never changes). [float]
P: Power of the beam. [float]
Pos: Position in 3D space of the origin of the beam. [3D vector]
Dir: Normalized direction in 3D space of the beam axis. [3D vector]
U: A tuple of unitary vectors which along with Dir form a direct orthonormal
    basis in which the Q tensor is expressed. [tuple of 3D vectors]
Name: Name of the beam if any. [string]
Ref: Reference to the beam. [string]
OptDist: Optical length. [float]
Length: Geometrical length of the beam. [float]
StrayOrder: Number representing the *strayness* of the beam. If the beams
    results from a transmission on a HR surface or a reflection on a AR
    surface, then its StrayOrder is the StrayOrder of the parent beam + 1.
    [integer]
Optic: Ref of optic where the beam departs from (None if laser). [string]
Face: face of the optic where the beam departs from. [string]