Krylov Alexander A, Chernykh Dmitriy S, Arutyunyan Natalia R, Grebenyukov Vyacheslav V, Pozharov Anatoly S, Obraztsova Elena D
Appl Opt. 2016 May 20;55(15):4201-9. doi: 10.1364/AO.55.004201.
We report on the stable picosecond and femtosecond pulse generation from the bidirectional erbium-doped all-fiber ring laser hybridly mode-locked with a coaction of a single-walled carbon nanotube-based saturable absorber and nonlinear polarization evolution that was introduced through the insertion of the short-segment polarizing fiber. Depending on the total intracavity dispersion value, the laser emits conservative solitons, transform-limited Gaussian pulses, or highly chirped stretched pulses with almost 20 nm wide parabolic spectrum in both clockwise (CW) and counterclockwise (CCW) directions of the ring. Owing to the polarizing action in the cavity, we have demonstrated for the first time, to the best of our knowledge, an efficient tuning of soliton pulse characteristics for both CW and CCW channels via an appropriate polarization control. We believe that the bidirectional laser presented may be highly promising for gyroscopic and other dual-channel applications.
我们报道了一种双向掺铒全光纤环形激光器，它通过单壁碳纳米管基可饱和吸收体与非线性偏振演化的共同作用实现混合锁模，其中非线性偏振演化是通过插入短段偏振光纤引入的。根据腔内总色散值，该激光器在环形腔的顺时针（CW）和逆时针（CCW）方向上发射保守孤子、变换受限高斯脉冲或具有近20nm宽抛物线光谱的高啁啾拉伸脉冲。由于腔内的偏振作用，据我们所知，我们首次通过适当的偏振控制证明了对CW和CCW通道的孤子脉冲特性进行有效调谐。我们认为所展示的双向激光器在陀螺和其他双通道应用中可能非常有前景。
