Second-harmonic generation from magnetic metamaterials
Second-harmonic generation from magnetic metamaterials
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DOI：
10.1126/science.1129198
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发表时间：
2006-07-28
期刊：
影响因子：
56.9
通讯作者：
Linden, Stefan
中科院分区：
文献类型：
--
作者：
Klein, Matthias W.;Enkrich, Christian;Linden, Stefan
我们观察到二次谐波产生的超材料组成的开口环谐振器在1.5微米波长激发。与纯粹的电偶极共振相比，当磁偶极共振被激发时，检测到更大的信号。这些实验与基于施加在金属电子上的洛伦兹力的磁分量的计算是一致的-这是一种内在的二次谐波产生机制，在天然材料中不起作用。这种不寻常的机制成为相关的在我们的工作中，作为一个结果的增强和方向的局部磁场与磁偶极子共振的开口环谐振器。
We observe second-harmonic generation from metamaterials composed of split-ring resonators excited at 1.5-micrometer wavelength. Much larger signals are detected when magnetic-dipole resonances are excited, as compared with purely electric-dipole resonances. The experiments are consistent with calculations based on the magnetic component of the Lorentz force exerted on metal electrons - an intrinsic second-harmonic generation mechanism that plays no role in natural materials. This unusual mechanism becomes relevant in our work as a result of the enhancement and the orientation of the local magnetic fields associated with the magnetic-dipole resonances of the split-ring resonators.