finesse.utilities.maps.overlap_piston_coefficient

finesse.utilities.maps.overlap_piston_coefficient(x, y, z, weight_spot: float)

Computes the amount of weighted piston term there is in some 2D data like a surface map. This is computed by evaluating a weighted Hermite polynomial overlap integral in an efficient manner.

Parameters

x, yarray_like

1D Array of x and y describing the 2D plane of z

zarray_like

2D optical path depth [metres]

weight_spotfloat

Beam spot size to weight over

Returns

pistonfloat

amount of piston term