Stimulated One-Photon and Multiphoton Processes in Strongly Driven Multilevel Atomic Systems

摘要: We derive and discuss the behaviour of several multilevel atomic systems relevant to problem stimulated one-photon multi- photon processes under simultaneous action strong laser fields weak signal fields. The considered here consist a single two-level atom, whose level degeneracies ground excited states have been removed by internal process or applying an external electric magnetic field, respectively. In this system, one two state levels atom is meta- stable its electron population depleted through either field (three-level atom) (four-level atom), deplete metastable bringing electrons into from where decay lower system. For such systems, fluorescent spectra are described one-photon, three-photon, two-photon Raman, dynamic aspects discussed in detail. It shown that intensities sidebands for question take negative values indicating amplification occurs at corresponding frequencies. computed presented graphically different Rabi frequencies detunings. derived results detail compared with observed spectra.