Abstract
A universal mechanism destroying coherence in a $\ensuremath{\Lambda}$ system driven by two resonant laser fields due to four-photon interactions is analyzed theoretically. It is shown that this mechanism gives rise to novel spectral structures in resonance fluorescence. The ``dark resonance'' in absorption (dispersion) spectra is affected as well.
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Schedule a callMore From: Physical review. A, Atomic, molecular, and optical physics
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