sentences:  We see that in the weak field approximation as well as formula_38, the coupled system will reach a quasi-steady state where the quantum fluctuations become negligible.The Strong Field Limit is the exact opposite limit to the weak field where the square modulus of the Rabi frequency of the electromagnetic field is much larger than the rate of spontaneous emission of the two-level atom.When a strong field is applied to the atom, a single peak is no longer observed in fluorescent light's radiation spectrum.