激光线宽
光学
激光阈值
布里渊散射
光纤激光器
布里渊区
瑞利散射
材料科学
激光器
光纤
物理
作者
Wenbin He,Xiaoyi Bao,Liang Chen
出处
期刊:Optics Letters
[The Optical Society]
日期:2013-05-22
卷期号:38 (11): 1866-1866
被引量:123
摘要
We observed narrow-linewidth lasing spikes in a coherent Brillouin random fiber laser, which uses a continuous-wave fiber laser as the pump source. In this random laser configuration, stimulated Brillouin scattering in a section of conventional single-mode fiber acts as the gain mechanism, while Rayleigh scattering in another section of the nonuniform fiber provides randomly distributed feedback. Above the lasing threshold, coherent random lasing spikes, with a linewidth of ~10 Hz, are measured at the top of the Brillouin gain spectrum. It results from high quality coherent resonance of the Brillouin Stokes light in this open laser cavity.
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