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

Structure diagram of the measurement setup. OC, optical coupler; (τ, fiber delay; FRM, Faraday rotator mirror; PD, photodiode; DAC, data acquisition card.