Multifunctional magneto-metasurface for terahertz one-way transmission and magnetic field sensing
Multifunctional magneto-metasurface for terahertz one-way transmission and magnetic field sensing
复制标题
用于太赫兹单向传输和磁场传感的多功能磁超表面
DOI：
10.1364/ao.54.009177
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发表时间：
2015-11-01
期刊：
影响因子：
1.9
通讯作者：
Chang, Shengjiang
中科院分区：
文献类型：
--
作者：
Chen, Sai;Fan, Fei;Chang, Shengjiang
磁超颖表面被证明用于太赫兹（THz）波的单向传输和磁场传感。由于磁光效应和传输系统的非对称结构，在该磁超表面中观察到了前向和后向THz波的磁等离子体激元模式分裂和单向传输。值得注意的是，已经发现磁超颖表面的谐振可以在218 K的温度下保持在0.750 THz，在0.23至0.35 T的磁场干扰内作为具有大于30 dB的隔离的稳定隔离器来执行。而且，由于磁超表面的谐振可以在高于或低于218 K的温度下通过不同的外部磁场来调谐，所以磁超表面可以用作高灵敏度的磁场传感器。当T = 230 K时，器件的灵敏度达到S = 513.05 GHz·T ~（-1）。这种多功能磁超颖表面在太赫兹应用系统中具有广阔的潜力。(C)2015美国光学学会
A magneto-metasurface is demonstrated for one-way transmission of terahertz (THz) waves and magnetic field sensing. Due to the magneto-optical effect and the asymmetric structure of the transmission system, magneto-plasmon mode splitting for forward and backward THz waves and one-way transmission has been observed in this magneto-metasurface. Significantly, the resonance of the magneto-metasurface has been found that can remain at 0.750 THz at a temperature of 218 K, performing as a stable isolator with an isolation of larger than 30 dB within a magnetic field disturbance from 0.23 to 0.35 T. Also, since the resonance of the magneto-metasurface can be tuned by the different external magnetic fields at a temperature that is higher or lower than 218 K, the magneto-metasurface can work as a highly sensitive magnetic field sensor. The sensitivity of this device reaches S = 513.05 GHz.T-1 when T = 230 K. This multifunctional magneto-metasurface has broad potential in THz application systems. (C) 2015 Optical Society of America