国防科技大学学报2017，Vol.39Issue(5)：139-144,6.DOI:10.11887/j.cn.201705022
布拉格衍射型冷原子干涉重力仪关键实验条件分析
Analysis on key experimental requirements of Bragg diffraction-based cold atom interferometry gravimeter
摘要
Abstract
A new type of cold atom interferometry gravimeter based on Bragg diffraction was presented,which is able to increase the gravity measurement sensitivity and stability of common Raman atom gravimeters significantly.By comparing with Raman transition,the principles and advantages of Bragg diffraction-based atom gravimeters were introduced.The theoretical model for a time-domain Bragg atom gravimeter with atomic incident direction parallel to the wave vector of Bragg lasers was constructed.Some key experimental requirements for an nth-order Bragg diffraction-based atom gravimeter were deduced,including the temperature of atom sources,the diameter,curvature radius,frequency,intensity,and timing sequence of Bragg pulses,etc.The analysis results were verified by the existing experimental data in discussion.The presented theoretical model and conclusions provide a meaningful reference for the understanding and construction of a Bragg diffraction-based cold atom gravimeter.关键词
冷原子干涉/重力仪/n阶布拉格衍射/大动量传输Key words
cold atom interferometry/gravimeter/nth order Bragg diffraction/large momentum transfer分类
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胡青青,杨俊,罗玉昆,贾爱爱,魏春华,厉泽环..布拉格衍射型冷原子干涉重力仪关键实验条件分析[J].国防科技大学学报,2017,39(5):139-144,6.基金项目
国家自然科学基金资助项目(51275523) （51275523）
高等学校博士学科点专项科研基金资助项目(20134307110009) （20134307110009）
湖南省研究生科研创新资助项目(CX2014A002) （CX2014A002）
国防科技大学优秀研究生创新资助项目(B140303) （B140303）
