The diffracted intensities of sodium atoms by a standing evanescent light wave near the three-Doppleron resonance are calculated using a multislice technique. This calculation predicts a sharp dip in the reflected intensity of the specular beam for a detuning slightly below resonance. Such phenomena have been observed experimentally and can be understood using the dressed-state picture.

• Received 23 August 1993

DOI:https://doi.org/10.1103/PhysRevA.49.3100