Valente João, Ou Jun-Yu, Plum Eric, Youngs Ian J, Zheludev Nikolay I
Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
Physical Sciences Department, DSTL, Salisbury SP4 0JQ, UK.
Nat Commun. 2015 Apr 24;6:7021. doi: 10.1038/ncomms8021.
Electro- and magneto-optical phenomena play key roles in photonic technology enabling light modulators, optical data storage, sensors and numerous spectroscopic techniques. Optical effects, linear and quadratic in external electric and magnetic field are widely known and comprehensively studied. However, optical phenomena that depend on the simultaneous application of external electric and magnetic fields in conventional media are barely detectable and technologically insignificant. Here we report that a large reciprocal magneto-electro-optical effect can be observed in metamaterials. In an artificial chevron nanowire structure fabricated on an elastic nano-membrane, the Lorentz force drives reversible transmission changes on application of a fraction of a volt when the structure is placed in a fraction-of-tesla magnetic field. We show that magneto-electro-optical modulation can be driven to hundreds of thousands of cycles per second promising applications in magneto-electro-optical modulators and field sensors at nano-tesla levels.
电光和磁光现象在光子技术中起着关键作用，使光调制器、光学数据存储、传感器和众多光谱技术成为可能。在外部电场和磁场中呈线性和二次方的光学效应广为人知且得到了全面研究。然而，在传统介质中依赖于同时施加外部电场和磁场的光学现象几乎无法检测到，在技术上也无足轻重。在此我们报告，在超材料中可以观察到一种大的互易磁电光效应。在弹性纳米膜上制备的人工人字形纳米线结构中，当该结构置于特斯拉级以下的磁场中时，洛伦兹力会在施加几分之一伏电压时驱动可逆的传输变化。我们表明，磁电光调制可以被驱动到每秒数十万次循环，有望在纳特斯拉级的磁电光调制器和场传感器中得到应用。
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