(1.Key Laboratory for Geophysical Instrumentation of Ministry of Education, Jilin University, Changchun 130061, China; 2.College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130061, China) 在期刊界中查找 在百度中查找 在本站中查找
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摘要:
摘要:摘要为提高无自旋交换弛豫(SERF)sensitivity of spinexchangerelaxationfree, 原子磁力仪的探测灵敏度,提出一种通过增加探测光在气室内部与泵浦光相互作用的光程长来提高SERF原子磁力仪探测灵敏度的方法,该方法采用在原子气室外侧搭建Herriott型多通池系统来实现复杂光路以及长光程,将系统整体放置在屏蔽筒内部,并利用3D软件对该无磁检测系统进行设计与制作。与传统型SERF原子磁力仪进行实验对比,该方案实现了在多频点的探测灵敏度不低于34 fT/Hz1/2的性能,可解决复杂光路的光学结构与原子磁力仪相结合这一问题,为未来采用FP积分腔的形式来进一步提升磁力仪性能打下良好基础。
Abstract:To improve the detection sensitivity of spinexchangerelaxationfree (SERF) atomic magnetometer, a method is proposed by increasing the optical range of the detection light, which interacts with the pump light in the gas chamber. This method usesthe technique of establishing Herriott multipass cell outside theatomic gas chamber.And thewhole system is placedinsidetheshieldingcylinder.Themagneticfreedetectionsystemis designedandmanufactured by 3Dsoftware.Comparedwith thetraditionalSERF atomicmagnetometer, itachieves the sensitivity that is not lower than 34 fT/Hz1/2 at multiple frequency points. The problem of combining the complex optical structure with atomic magnetometer can be solved. It provides a good foundation for further improving the performance of the magnetometer by using FP integral cavity in the future.