Long-rangespoofsurfaceplasmonsonthedoublycorrugatedmetal Surfaces
Long-rangespoofsurfaceplasmonsonthedoublycorrugatedmetal Surfaces
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双波纹金属表面上的远程表面等离子体激元
DOI：
10.1016/j.optcom.2016.02.059
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发表时间：
2016
影响因子：
2.4
通讯作者：
Pu-Kun Liu
中科院分区：
文献类型：
--
作者：
Yong-Qiang Liu;Ling-BaoKong;Pu-Kun Liu
本文将双波纹金属表面上的对称欺骗表面等离子体激元（SSP）模识别为长程欺骗表面等离子体激元（LRSSP），因为它具有极低的传播损耗和对称的主场分布，而短程欺骗表面等离子体激元（SRSSP）则是反对称模。基于理论计算和有限积分法数值模拟，研究了太赫兹波段两个相同波纹金属表面之间不同间隙尺寸下的对称和反对称SSP模式，得到了很好的一致性.此外，LRSSP的低损耗优势随着间隙尺寸的增大而沿着减弱。这项工作开辟了新的途径，利用这种远程表面模式在远红外，太赫兹或更低的频带，可以找到许多潜在的应用，如低损耗波导，滤波器和新的电子源。
In this paper, symmetric spoof surface plasmon (SSP) mode on the doubly corrugated metal surfaces is indentified as long-range spoof surface plasmon (LRSSP) because of its extreme low propagation loss and symmetric dominant field profile so as short-range SSP (SRSSP) for anti-symmetric mode. Based on theoretical calculation and numerical simulation of finite integration method, symmetric and anti-symmetric SSP modes with various gap sizes between these two identical corrugated metal surfaces are investigated in terahertz (THz) regime and good agreement is realized. Besides, the low loss superiority of LRSSP diminishes along with the increased gap size. This work opens up new avenues to utilize this long-range surface mode in far-infrared, THz or lower frequency band and can find many potential applications such as low-loss waveguide, filters and novel electronic sources.