两台独立飞秒钛宝石振荡器的高精度主动同步研究

Highly precise active-synchronization between two independentfemotosecond Ti: sapphire oscillators

对两台独立钛宝石飞秒振荡器的高精度主动同步进行了研究.实验中共采用三套锁相环对它们输出的激光脉冲进行了主动同步控制,最终得到了时间抖动低于30fs的同步精度;由于通过计算机智能监控两台振荡器的相对腔长变动,使得高精度同步维持的时间高达40min.

We demonstrate the highly precise active-synchronization between two independent Ti： sapphire femtosecond oscillators. A combination of three phase locked loops, is used to control the synchronization between two laser pulses, which gives a RMS timing jitter less than 30 fs. With the technique of cavity length monitoring and autocontrol by a computer, this highly precise synchronization can be retained for more than 40 minutes.