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
       

The experimental setup. TA, tapered amplifier; M, mirrors; PBS, polarizing beam splitter; HWP, half wave plate; L1, lens; SMF, single mode fiber; H, Helmholtz coil set for longitudinal case; PD, detector; SAS, saturated absorption spectroscopy.