Ramsey-coherent population trapping Cs atomic clock based on lin∥lin optical pumping with dispersion detection

Cheng Peng-Fei^{1, 2}, Zhang Jian-Wei^{2, 3, †}, Wang Li-Jun^{1, 2, 3, ‡}

(a) Measured laser frequency stability locked to the reference cell using Zeeman modulation. (b) Measured laser frequency-induced clock frequency shift (black squares) and corresponding linear fitted line (red line), which is mainly due to the AC Stark effect. The slope is measured to be −201 mHz/MHz.