Influence of dynamic Stark effect on the absorption of a test field
Vasilenko L. S. , Dyuba N. M., Rubtsova N. N., Chebotaev V. P.
Experiments show that the absorption of the weak test field tends toward zero with increasing intensity of the strong wave if the waves are propagating in the same direction. In contrast, the absorption remains on the order of the unsaturated absorption if the waves are propagating in opposite directions. The results are explained on the basis of a manifestation of a dynamic Stark effect of energy levels.