Xu Yanping, Xiang Dao, Ou Zhonghua, Lu Ping, Bao Xiaoyi
Opt Lett. 2015 May 1;40(9):1920-3. doi: 10.1364/OL.40.001920.
For the first time, we propose a novel Brillouin random fiber laser with a narrow linewidth of ∼860 Hz based on the bi-directionally pumped stimulated Brillouin scattering (SBS) in a 10-km-long optical fiber. A random fiber Fabry-Perot (FP) resonator is built up through the pump depletion effects of SBS at both ends of the fiber. A theoretical model is developed to reveal the physics behind the unique random FP resonator that enables narrow random lasing emission. The novel laser is successfully applied for linewidth characterization beyond 860 Hz of light source under test.
首次提出了一种基于10公里长光纤中双向泵浦受激布里渊散射（SBS）的窄线宽约860 Hz的新型布里渊随机光纤激光器。通过光纤两端SBS的泵浦耗尽效应建立了一个随机光纤法布里-珀罗（FP）谐振器。建立了一个理论模型来揭示独特随机FP谐振器背后的物理原理，该谐振器能够实现窄随机激光发射。这种新型激光器成功地用于测试光源超过860 Hz的线宽特性表征。
