Yin Mojuan, Huang Shenghong, Lu Baole, Chen Haowei, Ren Zhaoyu, Bai Jintao
Appl Opt. 2013 Sep 20;52(27):6799-803. doi: 10.1364/AO.52.006799.
A high-slope-efficiency single-frequency (SF) ytterbium-doped fiber laser, based on a Sagnac loop mirror filter (LMF), was demonstrated. It combined a simple linear cavity with a Sagnac LMF that acted as a narrow-bandwidth filter to select the longitudinal modes. And we introduced a polarization controller to restrain the spatial hole burning effect in the linear cavity. The system could operate at a stable SF oscillating at 1064 nm with the obtained maximum output power of 32 mW. The slope efficiency was found to be primarily dependent on the reflectivity of the fiber Bragg grating. The slope efficiency of multi-longitudinal modes was higher than 45%, and the highest slope efficiency of the single longitudinal mode we achieved was 33.8%. The power stability and spectrum stability were <2% and <0.1%, respectively, and the signal-to-noise ratio measured was around 60 dB.
展示了一种基于萨尼亚克环形镜滤波器（LMF）的高斜率效率单频（SF）掺镱光纤激光器。它将一个简单的线性腔与一个用作窄带滤波器以选择纵向模式的萨尼亚克LMF相结合。并且我们引入了一个偏振控制器来抑制线性腔中的空间烧孔效应。该系统能够在1064nm处以稳定的单频振荡运行，获得的最大输出功率为32mW。发现斜率效率主要取决于光纤布拉格光栅的反射率。多纵向模式的斜率效率高于45%，我们实现的单纵向模式的最高斜率效率为33.8%。功率稳定性和光谱稳定性分别<2%和<0.1%，测量的信噪比约为60dB。
