量子电子学报2020，Vol.37Issue(1)：110-117,8.DOI:10.3969/j.issn.1007-5461.2020.01.017
中远红外波段周期凹槽金属表面的等离子体激元
Surface plasmon polaritons on metal surfaces corrugated by periodic grooves in mid-far infrared range
摘要
Abstract
Surface plasmon polaritons (SPPs) propagating on metal surfaces corrugated with periodic grooves are investigated in the mid-far infrared band.Results show that the structured surface can significantly reduce the asymptotic frequency and improve the field confinement of SPPs propagating on it.The influence of the metal absorption loss on the performance of spoof SPPs (SSPPs) is also studied at the same frequency range.It is shown that sub-wavelength field confinement and long-distance propagation can be obtained simultaneously for SSPPs on metal surface corrugated with periodic grooves.The guiding ability of SSPPs supported by the structured surface is further verified by simulating the transmission of electromagnetic waves along it.The proposed surface structure may lead to the design and development of new integrated guided wave devices in mid-far infrared band.关键词
波导光学/表面等离子体激元/中远红外波段/波导/亚波长约束Key words
waveguide optics/surface plasmon polaritons/mid-far infrared band/waveguide/subwavelength field confinement分类
信息技术与安全科学引用本文复制引用
朱方明,李军,胡克用..中远红外波段周期凹槽金属表面的等离子体激元[J].量子电子学报,2020,37(1):110-117,8.基金项目
Supported by Natural Science Foundation of Zhejiang Province,China(浙江省自然科学基金,LY17F010010,LY17E070004) （浙江省自然科学基金,LY17F010010,LY17E070004）
