Artificial magnetism of cross shaped metamaterial in green light frequencies
Artificial magnetism of cross shaped metamaterial in green light frequencies
复制标题
绿光频率下十字形超材料的人工磁性
DOI:
10.1016/j.optmat.2015.10.009
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发表时间:
2015-12
影响因子:
3.9
通讯作者:
Ren Naifei
中科院分区:
文献类型:
--
作者:
Cong Jiawei;Zhou Zhiqiang;Yun Binfeng;Yao Hongbing;Ren Naifei
We theoretically investigate the magnetic response of a cross-shaped metamaterial at green light frequencies. Such a structure supports a strong magnetic resonance, which results in a large negative permeability and hence a band of negative refractive index over 50 THz. The structure is low loss and exhibits a high FOM of 3.75 at 570 THz. The magnetic resonance can be effectively tailored both in operation frequency and resonance strength by means of adjusting the geometric dimensions, which is well described by the equivalent circuit model. The proposed structure may offer an effective means to realize the magnetic devices at visible frequencies.
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