Abstract
In a time-dependent dressed-state calculation we have studied the time development of (1+1)-photon amplification without population inversion from an autoionizing (AI) state which is coupled to another AI state embedded into the same continuum. We have shown that the (1+1)-photon gain evolves with time over the single-photon gain and it can be controlled by changing the relative strength of the coupling of the resonant intermediate state with the ground state and with the two AI states. We have also shown that three-peaked gain on the upper probe field evolves with time and we have demonstrated that the modification of the second peak and the appearance of the third peak are solely due to the presence of the second AI state.
Published Version
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