利用原子干涉仪的相位调制进行绝对转动测量

提出一种基于原子干涉仪的相位调制进行绝对转动测量的方法.以π/2-π-π/2构型的空间型原子干涉仪为例，通过对拉曼激光进行相位调制，然后在动量谱空间测量转动对原子速度谱的调制周期，获得原子干涉仪相对惯性空间的绝对转动.文章对于采用该法进行角速度测量的测量范围以及对相位调制频率的要求进行了分析，对于散粒噪声限下的转动测量灵敏度及其影响因素进行了仿真.关键词：原子干涉仪原子陀螺相位调制绝对转动测量

The absolute rotation measurement of atom interferometer by phase modulation

In the paper，a measurement method of absolute rotation of atom interferometer is proposed. Generally，there are π/2-π-π/2 phase gratings in an atom interferometer in the space domain. We add three special phases to the three gratings，then，we modulate the special phases to change the detector signal of atom interferometer，and Fourier transform is performed on the detector signal，to obtain the absolute rotation of atom interferometer. The results are the discussed in the paper.