【摘要】 研制了一种新型的激光抽运高灵敏度原子磁力仪。该原子磁力仪利用磁场中铷原子与光场的相互作用,极化的铷原子在待测磁场中将进行拉莫尔进动,利用铷原子磁光共振频率与外磁场之间的关系,通过高灵敏度低噪声弱磁检测技术实现磁场的准确测量。测试结果表明,该磁力仪灵敏度为1pT/Hz^1/2;测试过程中磁场波动范围优于0.4 nT。更多还原

【Abstract】 The detection of magnetic anomalies with intellectual property is very important,which works with alkali metals pumped by the laser. A magnetometer based on nonlinear magneto-optical rotation has been constructed and tested. In this magnetometer,the laser interacts with the rubidium atoms in the magnetic field,the Larmor precession causes a rotation of the polarization of a separate probe beam; the polarization rotation frequency provides a measure of the magnetic field. Test results show that its sensitivity reaches 1 pT/Hz^1/2,the fluctuateionof magnetic field is better than 0. 4nT in the test course.更多还原