arc.alkali_atom_functions.AlkaliAtom.getTransitionWavelength#
- AlkaliAtom.getTransitionWavelength(n1, l1, j1, n2, l2, j2, s=0.5, s2=None)[source]#
Calculated transition wavelength (in vacuum) in m.
Returned values is given relative to the centre of gravity of the hyperfine-split states.
- Parameters
n1 (int) – principal quantum number of the state from which we are going
l1 (int) – orbital angular momentum of the state from which we are going
j1 (float) – total angular momentum of the state from which we are going
n2 (int) – principal quantum number of the state to which we are going
l2 (int) – orbital angular momentum of the state to which we are going
j2 (float) – total angular momentum of the state to which we are going
s (float) – optional, spin of the intial state (for Alkali this is fixed to 0.5)
s2 (float) – optional, spin of the final state. If not set, defaults to same value as
s
- Returns
transition wavelength (in m). If the returned value is negative, level from which we are going is above the level to which we are going.
- Return type