Observation of multi-Raman gain resonances in rubidium vapor
Liu Jun, Wei Dong†, , Wang Jin-wen, Yu Ya, Hu Hua-jie, Gao Hong‡, , Li Fu-li
       

Eight Λ-like subsystems are formed by a linearly polarized probe beam and a circularly polarized pump in a transverse magnetic field. The similar configurations can also be formed by the pump and the conjugate fields.