A new collective effect has been revealed in resonance fluorescence: the side and central components of the triplet in the emission spectrum of an atomic ensemble excited by an intense coherent field are narrowed in the case of the critical number of atoms in the ensemble.

中文翻译：

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共振荧光中的集体原子动力学

在共振荧光中揭示了一种新的集体效应：在原子团的临界数目的情况下，由强相干场激发的原子团的发射光谱中三重态的侧面和中心成分变窄。