Kim Chur, Jung Kwangyun, Kieu Khanh, Kim Jungwon
School of Mechanical, Aerospace and Systems Engineering & KAIST Institute for Optical Science and Technology,Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea.
Opt Express. 2012 Dec 31;20(28):29524-30. doi: 10.1364/OE.20.029524.
We characterize the timing jitter and intensity noise of an 80-MHz soliton Er-fiber laser mode-locked by a fiber taper carbon nanotube saturable absorber (ft-CNT-SA) up to the Nyquist frequency. The measured rms timing jitter is 3.0 fs (11.0 fs) integrated from 10 kHz (1 kHz) to 40 MHz offset frequency. The measured rms relative intensity noise (RIN) is 0.069% (0.021%) integrated from 10 Hz to 40 MHz (1 MHz) offset frequency. We identify that the resulting timing jitter is dominated by the Gordon-Haus jitter originated from the negative dispersion necessary for soliton mode-locking with a slow saturable absorber.
我们对由光纤锥碳纳米管可饱和吸收体（ft-CNT-SA）锁模的80 MHz孤子铒光纤激光器的定时抖动和强度噪声进行了表征，频率范围高达奈奎斯特频率。测量得到的均方根定时抖动在10 kHz（1 kHz）至40 MHz偏移频率范围内积分时为3.0 fs（11.0 fs）。测量得到的均方根相对强度噪声（RIN）在10 Hz至40 MHz（1 MHz）偏移频率范围内积分时为0.069%（0.021%）。我们确定，所产生的定时抖动主要由戈登-豪斯抖动主导，该抖动源于使用慢可饱和吸收体进行孤子锁模所需的负色散。
