铷原子气室偏振方向示意图及微波信号传播方向

The schematic diagram of the polarization direction is shown in Figure 1 (b). The cylindrical rubidium atomic cell is placed along the main axis in the z-axis direction. The detection light and the coupling light propagate in the opposite direction along the z-axis, and the polarization direction is along the x-axis and parallel to the horizontal plane. The microwave signal propagates downwards along the y-axis, and the polarization direction is in the x-z plane. The angle between the microwave polarization direction and the laser polarization direction is set to '$ heta$' ('$ heta$' â₊₋ [0,90]).