Non-adiabatic effects in the detuned micro-mazer: From the hot to the intermediate regime

We present a detailed theoretical study of transient effects that take place in a micro-mazer where the translational motion of the incident atom is quantized. We consider the case where the interaction is non-resonant taking into account for the exact Gaussian shape of the optical cavity. We study the behavior of the opto-mechanical effects that occur when the kinetic energy is modified from the hot (classical) to intermediate (quantized) regime. We show that the dynamics combines both strong non-adiabatic transitions and two kinds of Rabi oscillations. These effects lead to a strong modulation of the excited state population at the exit of the cavity with-although the excitation is non-resonant-complete population transfer for some particular values of the excitation parameters.