| Institution: | Zheng Tan 1,2,3,Xianping Sun 1,Jun Luo 1,Yong Cheng 1,Jin Wang 1,and Mingsheng Zhan 1,2 1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan National Laboratory for Optoelectronics,Wuhan 430071,China 2Center for Cold Atom Physics,China 3Graduate University of the Chinese Academy of Sciences,Beijing 100049,China |
| Abstract: | By using Faraday optical filter combined with four-wave mixing (FWM) amplifier, a narrow bandwidth optical amplifying atomic filter with switchable dual-passband is demonstrated experimentally. The two transmission peaks of the filter correspond to the Stokes and anti-Stokes frequencies, exhibiting a Raman gain in 13- and 17-fold, respectively, with bandwidth of ～120 MHz. By properly setting pump laser detuning, switching between filter passbands is realized. We also investigate the dependence of peak transmission on both pump laser intensity and Rb cell temperature. This atomic filter can find practical applications in long-distance laser communications and laser remote-sensing systems. |
