原子重力仪中拉曼光多余边带效应评估  

Evaluation of the Additional Laser Lines of A Raman Laser in Atom Gravimeter

作　　者：张路青 张柯 ZHANG Lu-qing;ZHANG Ke(Wuhan Military Representative Bureau of Naval Armament Deparment,Wuhan 430223,China;Huazhong Institute of Electro-Optics-Wuhan National Laboratory for Optoelectronics,Wuhan 430223,China)

机构地区：[1]海装驻武汉地区第七军事代表室,湖北武汉430223 [2]华中光电技术研究所—武汉光电国家研究中心,湖北武汉430223

出　　处：《光学与光电技术》2022年第5期41-47,共7页Optics & Optoelectronic Technology

摘　　要：为了减小原子重力仪的体积来提高其实用性,基于电光相位调制器的拉曼光是一个很有吸引力的方案。但是会因此产生额外的激光边带,对绝对重力测量带来很大影响。为了保证绝对重力测量准确度,针对贡献最大的拉曼光多余边带效应,通过理论模型与调制实验相结合的方式,实现其对重力测量影响的优化与评估。实验结果证明了多余边带效应评估方法的准确性,并将其不确定度评估至20μGal。In order to decrease the volume and increase the practicality,it is an attractive scheme of realizing the Raman laser by using the modulation of an electro-optic modulator. However,this way produces additional laser lines of a Raman laser,which gives a big impact on absolute gravity measurement. In order to ensure the accuracy of measuring the absolute gravity,we have realized the optimization and evaluation of this maximum system error in this paper,combined by the theoretical model and the modulation experiments. The result has proved the evaluation method and the uncertainty of this effect is evaluated to 20 μGal.

关 键 词：电光相位调制器 拉曼跃迁 原子干涉 绝对重力测量 系统误差评估 

分 类 号：TH761.5[机械工程—仪器科学与技术]