Fig. 1. ⁸⁵Rb atomic Raman transition

Fig. 2. The schematic of the stabilizing frequency and detuning of Raman laser

Fig. 3. The frequency-stabilized Raman laser system based on Rb isotope atom saturated absorption spectrum

Fig. 4. The saturated absorption spectrum of Rb atoms and lock position. The inset is the stabilizing frequency

Fig. 5. The self-heterodyne linewidth measurement of Raman laser

Fig. 6. Cold atom interference fringes

Fig. 7. Allan deviation of the gravity measurement