Rydberg-Rydberg interaction in the second-harmonic generation from rubidium atoms

摘要

We report on the observation of long range interaction in the second-harmonic generation from rubidiumRydberg atoms. The asymmetric spectral broadening of the resonant lines provides evidence of the van derWaals interaction between pairs of Rydberg atoms. This effect is investigated when the two-photon transitionis resonant with nd levels for n13.