介绍了一种简单的激光器频率锁定方法,该方法直接将多路激光器频率锁定到波长计。为了测量激光频率的锁定效果,当频率锁定时,利用参考于氢钟的飞秒光梳测量其频率。研究结果表明:锁定到波长计的548 nm光纤激光器的频率抖动在1 MHz以内,阿仑方差在20 s时可达到5×10 ^-11;397 nm和866 nm可调谐半导体激光器的频率抖动在±5 MHz以内,长期漂移速度小于2 MHz/h。

A concise scheme of laser frequency stabilization method is presented, multi-laser frequency are stabilized to wavemeter directly by this method. In order to check the laser frequency stabilization results, we measure the laser frequency by a femtosecond optical comb referenced to a hydrogen clock when the frequency is locked. The results show that the frequency jitter of 548 nm fiber laser frequency which locked to wavemeter is smaller than 1 MHz, and the Allan deviation at 20 s reaches 5×10 -11. The frequency stability of tunable diode lasers with wavelength of 397 nm and 866 nm are evaluated with frequency jitter of ±5 MHz and long-term drift rate of smaller than 2 MHz/h.