Narrowband switchable dual-passband atomic filter with four-wave mixing optical amplification

• 作 者: 谭政 孙献平 罗军 程雍 王谨 詹明生
• 机 构: State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Phys
• 出 处: Chinese Optics Letters
• 发表日期: 2011年02期
• 关键词: mixing Stokes amplifier amplification bandwidth switching properly correspond re

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.

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 properly adjusted 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.