Gong Sen *, Hu Min, Zhong Renbing, Chen Xiaoxing, Zhang Ping, Zhao Tao, and Liu Shenggang
Cooperative Innovation Centre of THz Science, University of Electronic Science and Technology of China,Chengdu,610054, China
* Email: Triwoods.uestc@163.com
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Abstract: In this paper, we present the parallel electron beam excitation of the surface plasmon polaritons (SPPs) in the double layer graphene sheets. The results of the theoretical analysis and numerical calculations show that the excited SPPs in the double layer graphene sheets have many characteristics and advantages compared to that in single layer graphene sheet. For the double layer graphene sheets, SPPs are spilt into two modes due to the coupling of SPPs, and the mode with higher frequency can be excited by parallel electron beam efficiently. The excited SPPs have higher operating frequencies and stronger field amplitudes than that in single layer graphene sheet, and the operating frequency can also be tuned by electron beam energy and chemical potential.
Keywords: Electron beam, Double layer graphene sheets, Surface plasmon polaritons.
Received: 2019-5-25
Published: 2019-6-30
Acknowledgments: This work is supported by the National Basic Research Program under grants No.2014CB339801, the Natural Science Foundation of China under Grant No. 61231005, No. 11305030 and No. 612111076, and National Hightech Research and Development Project under contract No. 2011AA010204.
Cite this article:
Gong Sen, Hu Min, Zhong Renbing, Chen Xiaoxing, Zhang Ping, Zhao Tao, and Liu Shenggang; Graphene surface plasmon polaritons excited by parallel electron beam [J]. International Journal of Terahertz Science and Technology, 2019, Vol.12, No.2: 48-56. DOI:10.11906/TST.048-056.2019.06.05
URL: http://www.tstnetwork.org/10.11906/TST.048-056.2019.06.05
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