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

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2011,（2）
• 页码范围: 53-56
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201109.021405

摘要

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.