Phase-related noise characteristics of 780 nm band single-frequency lasers used in the cold atomic clock

Zhang Xi^{1, 2}, Yang Fei^{1, †}, Feng Zi-Tong^{1, 2}, Zhao Jie-Jun^{1, 2}, Wei Fang¹, Cai Hai-Wen^{1, 2, ‡}, Qu Rong-Hui¹

The frequency fluctuation PSD before and after frequency locking.