科研之友
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摘要
The extraordinary optical transmission (EOT) phenomenon is usually more outstanding in optical and near-infrared frequency band than that in mid-infrared and other lower frequency range. In order to expand the high-quality EOT to a lower frequency, this paper proposes an effective redshift method which can cause the resonant frequencies of the EOT redshift greatly. Using this method, an EOT in mid-infrared frequency is achieved and the transmission of which is compared with that achieved via a conventional method. It is found that the peak transmission of the red-shifted EOT is enhanced greatly and can be as high as 90%, at the same time the resonance quality is preserved very well. The reason of the enhanced transmission is analyzed using the effective medium theory.
- 出版日期2014-5-21
- 单位中国地质大学（北京）
