光学微腔磁传感器(特邀)  

Optical Microcavity Magnetic Sensors(Invited)

作　　者：刘健飞 胡志刚 高艺萌 李贝贝 LIU Jianfei;HU Zhigang;GAO Yimeng;LI Beibei(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]北京凝聚态物理国家研究中心,中国科学院物理研究所,北京100190

出　　处：《光子学报》2024年第5期125-137,共13页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.62222515,12174438,11934019);国家重点研发计划(No.2021YFA1400700);中国科学院基础前沿科学研究计划从0到1原始创新项目(No.ZDBS‒LY‒JSC003);中国科学院稳定支持基础研究青年团队项目(No.YSBR‒100)。

摘　　要：磁场传感在基础物理研究及生物医疗、航空航天、军事、工业等领域的应用方面都发挥着重要作用。在过去的几十年间,研究人员已发展出超导量子干涉器件磁力仪、光学原子磁力仪、金刚石氮空位色心磁传感器等诸多高灵敏度磁传感器。光学微腔由于其品质因子高,模式体积小,因此可显著增强传感的灵敏度,近年来被广泛应用于高灵敏磁传感器的研究。本文对这种新兴的光学微腔磁传感器进行了全面介绍。光学微腔磁传感器根据工作原理的不同,大致可分为磁致伸缩磁传感器、扭矩磁传感器和磁光效应磁传感器这三类。本文介绍了这三类微腔磁传感器的工作原理和发展现状,并总结了多种提升磁场探测灵敏度的手段,最后对微腔磁传感器的发展方向和应用前景进行了展望。Sensors serve as an extension of human senses,facilitating the heightened perception and profound comprehension of the world.Among various kinds of sensors,magnetic field sensors play an increasingly vital role across diverse areas,such as biomedicine,aerospace,military,and industry,as well as fundamental scientific research.Currently,the state-of-the-art magnetic sensors are based on Superconducting Quantum Interference Devices(SQUIDs),with exceptional sensitivity at the fT/Hz^(1/2) level.However,their reliance on cryogenic systems leads to high operational costs and limited applications.In recent decades,significant advancements have been made in other magnetic sensors that can work at room temperature,including Hall sensors,optical atomic magnetometers,diamond Nitrogen Vacancy(NV)center magnetic sensors,etc.This review sheds light on an emerging,high-sensitivity magnetic field sensor known as the Optical Microcavity Magnetic sensor(OMM).OMMs utilizing high-quality factor optical microcavities have enabled precision sensing of magnetic fields,featuring high sensitivity,broad bandwidth,and low power consumption.In this review,we focus on recent advances using three types of OMMs:magnetostrictive magnetic sensors,torque magnetic sensors,and magneto-optic magnetic sensors.We provide an overview of the magnetic field sensing mechanisms employed by these three OMMs and survey the recent relevant progress.Furthermore,we discuss the sensitivity improvement methods through response enhancement and noise suppression.Finally,this review provides an outlook on the potential of OMMs for magnetic induction tomography and corona current monitoring.Based on their sensing mechanisms,OMMs can be typically categorized into magnetostrictive magnetic sensors,torque magnetic sensors,and magneto-optic magnetic sensors.The magnetostrictive magnetic sensors combine magnetostrictive materials with optical microcavities.The applied magnetic field induces strain within the magnetostrictive material,which can drive the mechanical motion o

关 键 词：光学微腔 磁传感器 高灵敏度 小型化 回音壁模式光学微腔 

分 类 号：O43[机械工程—光学工程]