KAIST Institute for Optical Science and Technology and School of Mechanical, Aerospace and Systems Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea.
Opt Lett. 2011 Nov 15;36(22):4443-5. doi: 10.1364/OL.36.004443.
We demonstrate sub-100-as timing jitter optical pulse trains generated from free-running, 77.6 MHz repetition-rate, mode-locked Er-fiber lasers. At -0.002(±0.001) ps2 net cavity dispersion, the rms timing jitter is 70 as (224 as) integrated from 10 kHz (1 kHz) to 38.8 MHz offset frequency, when measured by a 24 as resolution balanced optical cross correlator. To our knowledge, this result corresponds to the lowest rms timing jitter measured from any mode-locked fiber lasers so far. The measured result also agrees fairly well with the Namiki-Haus analytic model of quantum-limited timing jitter in stretched-pulse fiber lasers.
我们展示了从自由运行的、重复率为 77.6MHz 的、锁模的掺铒光纤激光器产生的亚 100 飞秒时间抖动的光脉冲串。在净腔色散为-0.002(±0.001) ps2 的情况下，当通过 24 飞秒分辨率的平衡光互相关器测量时，从 10kHz（1kHz）到 38.8MHz 偏移频率的积分 RMS 时间抖动为 70 飞秒（224 飞秒）。据我们所知，这一结果是迄今为止从任何锁模光纤激光器中测量到的最低 RMS 时间抖动。测量结果也与在拉伸脉冲光纤激光器中量子限制时间抖动的 Namiki-Haus 分析模型相当吻合。
