CAJ | 학술논문

飞秒激光频率梳测量光频实验中会遇到拍频信号信噪比低、高信噪比拍频信号维持时间短的问题。本文针对该问题在光路的准直、稳定维持方面采取了相应的光学、机械结构优化以及对拍频信号采取了先滤波后放大的措施；设计了一种拍频装置，并利用该装置进行了碘稳频633 nm 激光器 e 峰频率的绝对测量实验。
비초격광빈솔소측량광빈실험중회우도박빈신호신조비저、고신조비박빈신호유지시간단적문제。본문침대해문제재광로적준직、은정유지방면채취료상응적광학、궤계결구우화이급대박빈신호채취료선려파후방대적조시；설계료일충박빈장치，병이용해장치진행료전은빈633 nm 격광기 e 봉빈솔적절대측량실험。
In the absolute frequency measurement of optical frequency with a femtosecond optical synthesizer,the optical beat signal is al-ways too weak to be read by a frequency counter(Agilent 53132A). And the signal-to-noise ratio will get weaker as time flies. In this article we developed an appropriative setup for enhancing the signal-to-noise ratio of optical frequency beating by special optical and mechanical methods, with which we measured the frequency of the iodine-stabilized He-Ne laser at 633 nm.