摘要
近年来,超稳光生微波和远距离时频同步等高精度、高速科学研究对低噪声飞秒光纤激光器具有迫切的需求。为实现低时间抖动噪声的激光种子源,基于“光积木”结构,设计并搭建了一台重复频率为100 MHz的全保偏掺铒锁模光纤激光器,“光积木”结构可以有效地抑制激光器的机械噪声和重频漂移。采用平衡光学互相关技术,首次从全保偏锁模光纤激光器的出射脉冲中直接进行了高精度的时间抖动测量。该激光器在傅里叶频率10 kHz至1 MHz的积分区间内,积分均方根时间抖动仅为98.36 as。
In recent years,low-noise femtosecond fiber lasers are widely demanded in high-precision and highspeed research such as ultra-stable photogenerated microwave and long-distance time-frequency transfer.To realize a laser seed with low-timing-jitter noise,an 100 MHz all-polarization-maintaining mode-locked Er:fiber laser was demonstrated on "optical cube".The "optical cube" configuration can effectively suppress the mechanical noise and the drift of the repetition rate.Based on the balanced optical cross-correlator technique,this is the first time to perform high-precision time jitter measurement of the pulse train directly from an all polarization-maintaining modelocked Er:fiber laser.The integrated root-mean-square timing jitter from 10 kHz to 1 MHz offset frequency is only 98.36 as.
作者
赵洺贺
杨若傲
陈子扬
王爱民
李倩
张志刚
ZHAO Minghe;YANG Ruo'ao;CHEN Ziyang;WANG Aimin;LI Qian;ZHANG Zhigang(School of Electronic and Computer Engineering,Peking University,Shenzhen,518055,China;State Key Laboratory of Advanced Optical Communication Systems and Networks,School of Electronics,Peking University,Beijing 100871,China)
出处
《计测技术》
2023年第3期144-148,共5页
Metrology & Measurement Technology
基金
国家自然科学基金(U2031208,61761136002,61575004)。
关键词
飞秒激光器
时间抖动
平衡光学互相关
femtosecond laser
timing jitter
balanced optical cross⁃correlator
