光脉冲序列对三能级原子重力仪测量精度的影响

提出了一种通过改变激光脉冲序列来提高三能级原子重力仪测量精度的方法.利用提出的描 写原子运动的3×3阶矩阵方法，分析了三能级原子与双色光场的正交相互作用，计算了 原子干涉仪中的相位差，得到了原子重力仪的相位差与重力加速度的关系.发现通过选择合 适的光脉冲序列，可以提高三能级原子重力仪的精度. 关键词： 原子光学 原子重力仪 矩阵方法

Improvement of the measuring precision by changing the pulse sequence in the three-level atom gravimeter

We introduced a method that can improve the measurement precision of the three-level atom gravimeter by changing the sequence of the pulses. A 3×3 matrix is put forward to describe the propagation of atomic beams, the interaction between the three-level atoms and bichromatic laser fields, and to calculate the phase difference of the atom interferometers. We obtained also the relation between g ravity and the phase difference of the atom gravimeter. It is found that the pre cision of the three-level atom gravimeter can be increased simply by change the sequence of the optical pulses.