Fluorescence and absorption spectra of the Lambda-system in the case of Raman resonance

Analytic formulas are obtained that describe the fluorescence and absorptio n spectra of the Lambda-system in the case of Raman resonance for unequal i ntensities of the fields and nonzero one-photon detuning in the rotating wa ve approximation in the limit of the saturating field. It is shown that, al ong with a group of Lorentzian lines, the spectra contain an alternating no n-lorentzian part caused by the quantum specificity of the dynamics of the Lambda-system, which is of fundamental importance for an adequate explanati on of important physical features, such as the decay of spectral line wings , the position of maxima of spectral lines, and the behavior of the absorpt ion coefficient of a probe field near laser frequencies. The relation betwe en theoretical models describing the stationary and nonstationary dynamics of formation of the response of individual atoms is considered, and the pos sibility of the universal use of the phenomenological stationary model is s ubstantiated.