Cascade correlation-enhanced Raman scattering in atomic vapors
Ma Hong-Mei, Chen Li-Qing†, , Yuan Chun-Hua‡,
       

(a) The schematic diagram of the experiment. (b) The schematic diagram of Λ-type three-level atoms. P1, P2: pump fields; S1, S2: Stokes fields; Δ: detuning; M: mirror.