Laser frequency locking based on Rydberg electromagnetically induced transparency
Jiao Yuechun, Li Jingkui, Wang Limei, Zhang Hao, Zhang Linjie, Zhao Jianming†, 
, Jia Suotang
, Jia Suotang Monitored laser frequency of the coupling laser with and without locking on. After locking on, the laser frequency fluctuation is strongly suppressed, the frequency stability is ±0.7 MHz, and the frequency fluctuation was less than 1 MHz in a given period of 220 s.
