Strong optical activity in chiral metamaterials of metal screw hole arrays
Strong optical activity in chiral metamaterials of metal screw hole arrays
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DOI：
10.1063/1.2392787
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发表时间：
2006-11
影响因子：
4
通讯作者：
F. Miyamaru;M. Hangyo
中科院分区：
文献类型：
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作者：
F. Miyamaru;M. Hangyo
作者证明了太赫兹区域手性超材料引起的电磁波偏振的变化。入射太赫兹波穿过由金属板螺孔阵列制成的手性超材料后，其偏振发生巨大变化。在与有限长度金属波导的驻腔模式相对应的频率处观察到强烈的谐振偏振变化（椭圆率和偏振方位角）。这样的实验结果表明金属螺孔阵列可以作为强光学活性材料。
The authors demonstrate the change of the polarization of the electromagnetic wave induced by chiral metamaterials in the terahertz region. The polarization of the incident terahertz wave changes dramatically after transmitting through the chiral metamaterials made of the array of screw holes in metal slabs. A strong resonant polarization change (ellipticity and polarization azimuth) is observed at frequencies corresponding to the standing cavity modes of the metal waveguide with a finite length. Such experimental results indicate that the metal screw hole arrays work as a strong optically active material.