Enhanced transmittance and fields of a thick metal sandwiched between two dielectric photonic crystals

Enhanced transmittance and fields of a thick metal sandwiched between two dielectric photonic crystals
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夹在两个介电光子晶体之间的厚金属的增强透射率和场

DOI:
10.1063/1.3512903
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发表时间:
2010-11
影响因子:
3.2
通讯作者:
Wang, Zhan-shan
Wang, Zhan-shan
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Du, Gui-qiang;Jiang, Hai-tao;Chen, Hong;Wang, Li;Wang, Zhan-shan

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我们证明,与相同厚度的单个金属层相比,夹在两个介电光子晶体 (PC) 之间的厚金属的透射率和场强可以分别提高两个数量级以上和近 20 倍。在隧道机制下,光线可以无反射地进入夹层结构,并定位在金属膜和PC的两个界面处。这种场的配置有利于减少金属中的吸收。实验结果与模拟结果非常吻合。
We demonstrated that transmittance and field intensities of a thick metal sandwiched between two dielectric photonic crystals (PCs) can be enhanced by more than two orders of magnitude and by nearly 20 times, respectively, compared to a single metal layer with the same thickness. Under the tunneling mechanism, the light can enter the sandwiched structure without reflection and localizes at the two interfaces of the metal film and PCs. This configuration of fields facilitates the reduction of absorption in the metal. Experimental results are in good agreement with simulations.
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