摘要
水平对抛式原子干涉陀螺以物质波和Sagnac效应为基础,能够对其载体在运动过程中水平方向上产生的角速度及角加速度进行高精度测量。陀螺的物理系统为原子的冷却、囚禁、干涉提供超高真空环境和特定磁场环境,并为激光操控和探测原子态提供光学通路,是陀螺的核心部分。为了实现原子干涉测量并满足高精度测量的需求,在分析原子干涉陀螺运行原理的基础上明确了陀螺物理系统的功能及基本结构,理论分析了物理系统的真空度、磁场等关键指标,然后根据分析和设计结果研制了一套水平对抛式原子干涉陀螺物理系统,测量结果显示真空度可稳定维持在10^(-8)Pa量级,利用这套系统获得的冷原子团直径约6 mm、原子数量约8×10^(9)个、原子温度为12.8μK,满足后续原子干涉测量需求。
Based on matter wave and Sagnac effect,the angular velocity and acceleration in horizontal direction of the carrier can be measured by the horizontal atom interferometric gyroscope.The physical system is the key subsystem of a gyroscope,which provides the circumstances of ultrahigh vacuum with special magnetic distributions and optical paths for control and detection of atom states by lasers.To realize of atom interferometry and satisfy the requirements of high-precision measurement,the principles of atom interferometric gyroscope operation are analyzed,and the functional requirements and basic mechanical components are clarified.Based on the theoretical analysis,the key specifications including vacuum degrees and magnetic distributions of each functional area are proposed.Therefore,a physical system of atom interferometric gyroscope is constructed,the measurement results reveal that the vacuum held steady at 10^(-8)Pa,and the diameter of cold atom cloud generating from this system is 6 mm,with the quantity of 8×10^(9)and temperature of 12.8μK,which satisfies the requirement of the subsequent experiments.
作者
王先华
贾森
王一丁
Wang Xianhua;Jia Sen;Wang Yiding(Department of Photoelectric Technology,Xi′an Institute of Optics and Precision Mechanics,Chinese Academy of Science,Xi′an 710119,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2022年第12期87-95,共9页
Chinese Journal of Scientific Instrument
基金
中国科学院“西部之光”人才培养计划“西部青年学者”项目(E129321101,XAB2021YN16)
陕西省重点研发计划(2021GY-284)项目资助
关键词
原子干涉测量
陀螺仪
角速度
Sagnac效应
atom interferometric measurement
gyroscope
angular velocity
Sagnac effect
