Surface plasmon polaritons light radiation source with asymmetrical structure
Surface plasmon polaritons light radiation source with asymmetrical structure
复制标题
不对称结构的表面等离子体激元光辐射源
DOI：
10.1063/1.5000779
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发表时间：
2018-01
期刊：
影响因子：
1.6
通讯作者：
Liu Shenggang
中科院分区：
文献类型：
--
作者：
Zhong Renbin;Yu Chengpeng;Hu Min;Liu Shenggang
提出并研究了一种双金属膜非对称表面等离子体激元光辐射源。平行移动的电子束可以在双金属薄膜上激发出表面等离子体激子模，然后在衬底中转化为增强的切伦科夫辐射。可实现从红外到紫外的可调谐双频辐射。与单金属膜结构相比，SPLRD的效率、可调谐性和输出功率密度大大增加，可实现高达8倍的辐射功率强度。圆柱形SPLRD的辐射性能增强到更大的程度，所需的激发电子束能量和介电基板的介电常数的减少。这种非对称结构和表面等离子激元激发模式所带来的这些新特性对于进一步理解电子束-表面等离子激元相互作用和开发高效宽带光辐射源具有重要意义。平行移动的电子束可以在双金属薄膜上激发出表面等离子体激子模，然后在衬底中转化为增强的切伦科夫辐射。可实现从红外到紫外的可调谐双频辐射。与单金属膜结构相比，SPLRD的效率、可调谐性和输出功率密度大大增加，可实现高达8倍的辐射功率强度。圆柱形SPLRD的辐射性能增强到更大的程度，所需的激发电子束能量和介电基板的介电常数的减少。由于结构的不对称性和表面等离子体的激发模式，这些新的性质是重要的，进一步了解电子束-表面等离子体相互作用和有效的宽带光辐射的发展。
An asymmetrical surface plasmon polaritons (SPPs) light radiation source with double metal films (SPLRD) is presented and studied. SPPs modes can be excited on the double metal films by a parallel traveling electron beam and then transformed into enhanced Cherenkov radiation in the substrate. Tunable dual-frequency radiation ranging from infrared to ultraviolet can be realized. In comparison with a single-metal-film structure, the efficiency, tunability, and output power density of the SPLRD are greatly increased, with up to eight times higher radiation power intensity being achievable. The radiation performance of a cylindrical SPLRD is enhanced to an even greater extent, with reductions in the required exciting electron-beam energy and the dielectric substrate permittivity. These novel properties due to the asymmetry of the structure and the SPPs excitation pattern are significant for furthering the understanding of electron beam–SPPs interaction and for the development of efficient wideband light radiation sources.An asymmetrical surface plasmon polaritons (SPPs) light radiation source with double metal films (SPLRD) is presented and studied. SPPs modes can be excited on the double metal films by a parallel traveling electron beam and then transformed into enhanced Cherenkov radiation in the substrate. Tunable dual-frequency radiation ranging from infrared to ultraviolet can be realized. In comparison with a single-metal-film structure, the efficiency, tunability, and output power density of the SPLRD are greatly increased, with up to eight times higher radiation power intensity being achievable. The radiation performance of a cylindrical SPLRD is enhanced to an even greater extent, with reductions in the required exciting electron-beam energy and the dielectric substrate permittivity. These novel properties due to the asymmetry of the structure and the SPPs excitation pattern are significant for furthering the understanding of electron beam–SPPs interaction and for the development of efficient wideband light radia...
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影响因子：
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