Collings B C, Bergman K, Knox W H
Opt Lett. 1998 Jan 15;23(2):123-5. doi: 10.1364/ol.23.000123.
We demonstrate a short-cavity erbium-ytterbium fiber laser that is passively mode locked by a saturable Bragg reflector with a fundamental repetition rate of 235 MHz . The laser operates in the soliton regime and under passive harmonic mode locking with 11 pulses in the cavity and produces output pulse trains at 2.6 GHz with transform-limited 270-fs pulses and 1.6 mW of average power. Within the cavity the multiple pulses form a stable pattern with fixed, nearly equal pulse-to-pulse temporal spacings, causing the output pulse train to have timing offsets of less than 15 ps. A slow gain-recovery model is proposed to explain the pulse-train self-organization.
我们展示了一种短腔铒镱光纤激光器，它由一个可饱和布拉格反射器被动锁模，基重复频率为235兆赫。该激光器工作在孤子状态下，并在腔内有11个脉冲的被动谐波锁模下，产生2.6吉赫的输出脉冲序列，具有变换极限的270飞秒脉冲和1.6毫瓦的平均功率。在腔内，多个脉冲形成一个稳定的模式，具有固定的、几乎相等的脉冲间时间间隔，使得输出脉冲序列的定时偏移小于15皮秒。提出了一个慢增益恢复模型来解释脉冲序列的自组织现象。
