基于Au/Ce···YIG/TiN结构的磁光表面等离激元共振及折射率传感器研究  

Magneto-Optical Surface Plasmon Resonance and Refractive Index Sensor Based on Au/Ce···YIG/TiN Structure

作　　者：王会丽 秦俊[1,2] 康同同 张燕[1,2] 聂立霞 艾万森 李艳芳[1,2] 毕磊[1,2] Wang Huili;Qin Jun;Kang Tongtong;Zhang Yan;Nie Lixia;Ai Wansen;Li Yanfang;Bi Lei(National Engineering Research Center of Electromagnetic Radiation Control Material,University of Electronic Science and Technology of China,Chengdu,Sichuan 610054,China;School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu,Sichuan 610054,China)

机构地区：[1]电子科技大学国家电磁辐射控制材料工程技术研究中心,四川成都610054 [2]电子科技大学电子科学与工程学院,四川成都610054

出　　处：《激光与光电子学进展》2019年第20期148-156,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金面上项目（61475031）;自然科学基金优青项目（51522204）;科技部重点研发计划（2016YFA0300802)

摘　　要：提出了一种基于Au/Ce:YIG/TiN结构的磁光表面等离激元共振器件(MOSPR)。通过构建Au周期纳米盘、Ce:YIG薄膜和TiN薄膜三层结构,实现Au纳米盘局域表面等离激元共振(LSPR)和TiN/Ce:YIG界面传播型表面等离激元共振耦合,显著降低了LSPR的散射损耗,并实现了磁光效应的显著增强。MOSPR的横向磁光克尔效应(TMOKE)信号的绝对值达0.21。应用这一器件制备传感器,借助磁光氧化物的强磁光效应,可以显著提高LSPR传感器的品质因数(FoM)。基于TMOKE谱进行传感,器件的FoM可达2192.4586RIU-1。该研究为高灵敏度、高FoM LSPR器件的制备提供了一种新思路。A magneto-optical surface plasmon resonance device(MOSPR)based on Au/Ce YIG/TiN structure is proposed.By constructing a three-layer structure which comprises the periodic Au nanodisk array,Ce YIG film,and TiN film,the coupling between the Au nanodisk′s localized surface plasmon resonance(LSPR)and the TiN/Ce YIG interface propagation surface plasmon resonance can be realized,which can significantly reduce the scattering loss of LSPR and enhance the magneto-optical effect.The absolute value of the transverse magnetooptical Kerr effect(TMOKE)of MOSPR reaches 0.21.Using the MOSPR and the strong magneto-optical effect of the magneto-optical oxide to prepare the sensor can significantly improve the figure of merit(FoM)of the LSPR sensor.Based on the TMOKE spectrum for sensing,the sensor′s FoM is up to 2192.4586RIU-1.This research provides a new idea for the preparation of LSPR devices with high sensitivity and high FoM.

关 键 词：表面光学 磁光表面等离激元 局域表面等离激元共振 横向磁光克尔效应 折射率传感器 

分 类 号：O436[机械工程—光学工程]