Tkachenko A Yu, Vladimirskaya A D, Lobach I A, Kablukov S I
Opt Lett. 2018 Apr 1;43(7):1558-1561. doi: 10.1364/OL.43.001558.
We report on spectral range stabilization in a self-sweeping laser by adding a narrowband fiber Bragg grating (FBG) to the output mirror in the Michelson configuration. The effects of FBG reflectivity and optical path difference in the Michelson interferometer on the laser spectral dynamics are investigated. Optimization of the interferometer allows us to demonstrate broadband (over 16 nm) self-sweeping operation and reduction of the start and stop wavelength fluctuations by two orders and one order of magnitude (∼100 and 15 times) for start and stop bounds, respectively (down to several picometers). The proposed approaches significantly improve quality of the spectral dynamics and facilitate application of the self-sweeping lasers.
我们报告了通过在迈克尔逊配置的输出镜中添加窄带光纤布拉格光栅（FBG）来实现自扫频激光器的光谱范围稳定。研究了迈克尔逊干涉仪中FBG反射率和光程差对激光光谱动力学的影响。对干涉仪进行优化后，我们实现了宽带（超过16nm）自扫频操作，并将起始和终止波长波动分别降低了两个数量级和一个数量级（起始边界约为100倍，终止边界约为15倍）（降至几皮米）。所提出的方法显著提高了光谱动力学的质量，并促进了自扫频激光器的应用。
