Significantly enhanced infrared absorption of graphene photodetector under surface-plasmonic coupling and polariton interference

doi:10.1364/oe.26.030862

CIOMP OpenIR

	Significantly enhanced infrared absorption of graphene photodetector under surface-plasmonic coupling and polariton interference
	Zhang, Y.; Meng, D. J.; Li, X.; Yu, H. H.; Lai, J. J.; Fan, Z. Y.; Chen, C. H.
	2018
发表期刊	Optics Express
ISSN	1094-4087
卷号	26 期号:23 页码:30862-30872
摘要	Here, we present a graphene-based long-wavelength infrared photodetector, for enhancing the infrared absorption of which the design consists of magnetic- and electric-plasmon resonators of metasurface to excite the graphene surface-plasmonic polaritons (SPPs). Through tuning the graphene Fermi energy to achieve the distinct resonances in a matching frequency, peak graphene absorbance exceeding 67.2% is confirmed, even when a lossy dielectric is used, and the field angle of view is up to 90 degrees. If the graphene is of a different carrier mobility, then the absorption frequency is lockable, and the device always can keep the system absorbance close to 100 percent. The significantly enhanced graphene absorbance, up to similar to 29-fold that of a suspended graphene (general 2.3%), is attributed to the surface-plasmonic coupling between the magnetic and the electric resonances, as well as Fabry-Perot interference of the coherent SPPs. The plasmonic cavity-mode model and equivalent-circuit method developed in this study will also be useful in guiding other optoelectronic device design. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
关键词	induced transparency light-absorption terahertz photonics frequency Optics
DOI	10.1364/oe.26.030862
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/61149
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Zhang, Y.,Meng, D. J.,Li, X.,et al. Significantly enhanced infrared absorption of graphene photodetector under surface-plasmonic coupling and polariton interference[J]. Optics Express,2018,26(23):30862-30872.
APA	Zhang, Y..,Meng, D. J..,Li, X..,Yu, H. H..,Lai, J. J..,...&Chen, C. H..(2018).Significantly enhanced infrared absorption of graphene photodetector under surface-plasmonic coupling and polariton interference.Optics Express,26(23),30862-30872.
MLA	Zhang, Y.,et al."Significantly enhanced infrared absorption of graphene photodetector under surface-plasmonic coupling and polariton interference".Optics Express 26.23(2018):30862-30872.

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