Abstract
We present a theoretical treatment for generalized dressed and doubly-dressed multi-wave mixing processes. Co-existing four-wave mixing (FWM), six-wave mixing (SWM) and eight-wave mixing processes have been considered in a closed-cycle five-level system. Due to constructive interference of the secondarily-dressed and primarily-dressed excitation pathways, the FWM and SWM signals are greatly enhanced. The dually enhanced FWM channels are opened simultaneously.
Highlights
High-order multi-wave mixing processes have been the subject of intense research activities for the past few decades
Co-existing four-wave mixing (FWM), six-wave mixing (SWM) and eight-wave mixing (EWM) processes have been considered in a closed-cycle five-level folded system as one example (n=4) of the generalized doubly-dressed (2n-4)WM systems
When G4 / Γ30 = 50 the SWM signal is strongly enhanced by a factor of 620 in the presence of the dressing field when Δ3a / Γ30 = −50 [blue curve in Fig. 3(c)], which is mainly due to the three-photon ( 0 → 1 → 2 → + ) resonance
Summary
High-order multi-wave mixing processes have been the subject of intense research activities for the past few decades. Co-existing FWM, SWM and eight-wave mixing (EWM) processes have been considered in a closed-cycle five-level folded system as one example (n=4) of the generalized doubly-dressed (2n-4)WM systems. Converts to a coherent superposition of signals from FWM and SWM in the weak dressing field limit.
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