qspec.gaussian_doppler_3d  (  r ,  k ,  w0 ,  v ,  r0 = None ,  axis = -1  )[source]

Parameters:

rarray_like

The position 3-vector relative to 'r0' where to calculate the doppler-shifted wave number (m).

karray_like

The k-wave-3-vector of light (rad / m).

w0array_like

The beam waist (m).

varray_like

The velocity 3-vector (m/s).

r0None

The position 3-vector of the beam waist. Is (0m, 0m, 0m) if r0 is not specified (m).

axisNone

The axis along which the vector components are aligned.

Returns:

outarray_like

The length of the k-wave-3-vector in the atoms rest frame (rad / m).

Raises:

ValueError

r, k, v and r0 must have 3 components along the specified axis. The shapes of r, k, w0, v and r0 must be compatible.