中远红外波段周期凹槽金属表面的等离子体激元

量子电子学报 ›› 2020, Vol. 37 ›› Issue (1): 110-117.

中远红外波段周期凹槽金属表面的等离子体激元

朱方明1, 李军1，胡克用2

1 杭州师范大学信息科学与工程学院，浙江杭州 311121; 2 杭州师范大学钱江学院，浙江杭州 310018

收稿日期:2019-06-18 修回日期:2019-07-31 出版日期:2020-01-28 发布日期:2020-01-28
通讯作者: 胡克用 E-mail:hukeyong@yeah.net
作者简介:朱方明（1969-），女，浙江湖州人，博士，副教授，硕士生导师，主要从事表面等离子体激元、集成波导等方面的研究。E-mail: fmzhu@hznu.edu.cn
基金资助:
Supported by Natural Science Foundation of Zhejiang Province, China (浙江省自然科学基金, LY17F010010，LY17E070004)

Surface Plasmon Polaritons on metal surfaces corrugated by periodic grooves at mid-far infrared range

ZHU Fangming1, LI Jun1, HU Keyong2

1 School of Information Science and Engineering, Hangzhou Normal University, Hangzhou 311121, China； 2 Qianjiang College, Hangzhou Normal University, Hangzhou 310018, China

Received:2019-06-18 Revised:2019-07-31 Published:2020-01-28 Online:2020-01-28

摘要/Abstract

摘要： 对中远红外波段周期凹槽金属表面结构上传播的表面等离子体激元(surfaces plasmon polaritons，SPPs)进行了研究，结果表明金属表面刻周期凹槽可以显著降低人工SPPs的渐近频率，提高金属表面对电磁场的约束能力。还研究了该波段金属的吸收损耗对人工SPPs特性的影响，结果显示基于刻槽周期表面结构，不仅可以获得场的亚波长约束，还可以实现长距离传输。通过对电磁波沿该表面结构的传输特性的模拟，还验证了表面结构所支持的SSPPs的导波能力。该表面结构对设计和开发中远红外波段的新型集成导波器件具有参考意义。

关键词: 表面等离子体激元, 中远红外波段, 波导, 亚波长约束

Abstract: Surface plasmon polaritons (SPPs) propagating on metal surfaces corrugated with periodic grooves are studied in the mid-far infrared band. The 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 this frequency range. It is shown that sub-wavelength field confinement and long propagation length 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.

Key words: surface plasmon polaritons, mid-far infrared band, waveguide, subwavelength field confinement

中图分类号:

TN256

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.

ZHU Fangming, LI Jun, HU Keyong. Surface Plasmon Polaritons on metal surfaces corrugated by periodic grooves at mid-far infrared range[J]. Chinese Journal of Quantum Electronics, 2020, 37(1): 110-117.

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