We demonstrate sub-femtosecond timing jitter of ultrashort pulses from a dispersion managed Yb-fiber laser mode-locked by a SESAM. Timing jitters of the mode-locked Yb-laser under different dispersion conditions (when the intra-cavity dispersions are −0.005 ps 2 , +0.001 ps 2 , +0.006 ps 2 ) are characterized by the single-crystal balanced optical cross-correlator. In our experiment, an ultra-low timing jitter of 48 attoseconds is achieved when the jitter spectral density is integrated from 3 kHz to 1 MHz offset frequency. We think that the obtained timing jitter level is the lowest for fiber lasers mode-locked by real saturable absorbers. This ultra-low timing-jitter, stably mode-locked fiber laser source is expected to be used for high precision applications outside of the laboratory.

中文翻译：

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SESAM 锁模 Yb 光纤激光器的亚飞秒定时抖动


我们演示了由 SESAM 锁模的色散管理 Yb 光纤激光器产生的超短脉冲的亚飞秒定时抖动。利用单晶平衡光互相关器表征了锁模Yb激光器在不同色散条件下（当腔内色散为-0.005 ps 2 、+0.001 ps 2 、+0.006 ps 2 时）的定时抖动。在我们的实验中，当抖动频谱密度从 3 kHz 到 1 MHz 偏移频率进行积分时，可实现 48 阿秒的超低定时抖动。我们认为，对于由真正的可饱和吸收体锁模的光纤激光器，所获得的定时抖动水平是最低的。这种超低定时抖动、稳定锁模光纤激光源有望用于实验室外的高精度应用。