微小型CPT原子磁力仪  

Miniature CPT atomic magnetometer

作　　者：李明阳 王学锋 卢向东[1,2] 邓意成 李新坤[1,2] 王风娇 LI Mingyang;WANG Xuefeng;LU Xiangdong;DENG Yicheng;LI Xinkun;WANG Fengjiao(Quantum Engineering Research Center of CASC,Beijing 100094,China;Beijing Institute of Aerospace Control Devices,Beijing 100854,China)

机构地区：[1]中国航天科技集团有限公司量子工程研究中心,北京100094 [2]北京航天控制仪器研究所,北京100854

出　　处：《传感器与微系统》2022年第11期93-96,共4页Transducer and Microsystem Technologies

基　　金：钱学森青年创新基金资助项目(政字[2020]10号)。

摘　　要：针对同轴对射式相干布居俘获(CPT)原子磁力仪光纤位于探头两端,导致探头体积过大,不利于小型无人机(UAV)搭载应用的问题,设计了一种微小型CPT原子磁力仪,实现了入射与出射光纤同侧安装,解决了光纤弯折导致探头体积过大的问题。测试结果表明:微小型CPT原子磁力仪准确度优于0.24 nT,非线性度优于0.00024%,磁场跟踪能力优于375 nT/s,噪声优于15.34 pT/Hz^(1/2)@1~15 Hz,探头体积15.6 cm^(3),满足了小型无人机搭载使用需求。Aiming at the problem that the optical fibers of coherent population trapping(CPT)atomic magnetometer are located on the opposite sides of the sensor,which results in the probe is too large and is not suitable to be used on miniature unmanned aerial vehicle(UAV),a kind of miniature CPT magnetometer is designed,so that the incident and outgoing optical fibers can be installed on the same side of the sensor.The problem of over large probe caused by bending of optical fibers is solved.The test results show that the accuracy of miniature CPT atomic magnetometer is prior to 0.24 nT,the nonlinearity is prior to 0.00024%,the magnetic field tracking ability is prior to 375 nT/s,the noise of magnetometer is prior to 15.34 pT/Hz^(1/2)@1~15 Hz,and the volume of the probe is 15.6 cm^(3),which meets usage requirement of miniature UAV carrying.

关 键 词：相干布居俘获 原子磁力仪 微型气室 性能测试 小型无人机 

分 类 号：TH744[机械工程—光学工程]