Research - Commercialisation
Lasing without Inversion: Counterintuitive Population Dynamics in the Transient Regime
S.Ya.Kilin, KishoreT.Kapale, and Marlan O.Scully
We explored a three-level lambda-scheme to demonstrate that the phenomenon of lasing without inversion (LWI) can be observed in the transient regime. We demonstrate that the pure LWI contribution to the gain of a probe field is distinct from both the resonant absorption (or gain) and the coherent Raman gain (or absorption) by choosing specific initial populations in the dressed-state basis. The suppression of the non-LWI (resonant and Raman) processes is followed by the ‘‘rich get richer’’ (capitalistic) effect for the ground-state population dynamics: Initially, the more populated ground state becomes even more populated. The conditions for the observation of the effect are specified.
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