Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures

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	Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures
	Zheng, Ze-Bo; Li, Jun-Tao; Ma, Teng; Fang, Han-Lin; Ren, Wen-Cai; Chen, Jun; She, Jun-Cong; Zhang, Yu; Liu, Fei; Chen, Huan-Jun
刊名	CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS
	2017-10-06
卷号	6 页码:-
关键词	Chemical Doping Electromagnetic Field Localizations Graphene Graphene Nanostructures Graphene Plasmons
ISSN号	2047-7538
英文摘要	Graphene has great potential for enhancing light - matter interactions in a two-dimensional regime due to surface plasmons with low loss and strong light confinement. Further utilization of graphene in nanophotonics relies on the precise control of light localization properties. Here, we demonstrate the tailoring of electromagnetic field localizations in the mid-infrared region by precisely shaping the graphene into nanostructures with different geometries. We generalize the phenomenological cavity model and employ nanoimaging techniques to quantitatively calculate and experimentally visualize the two-dimensional electromagnetic field distributions within the nanostructures, which indicate that the electromagnetic field can be shaped into specific patterns depending on the shapes and sizes of the nanostructures. Furthermore, we show that the light localization performance can be further improved by reducing the sizes of the nanostructures, where a lateral confinement of lambda(0)/180 of the incidence light can be achieved. The electromagnetic field localizations within a nanostructure with a specific geometry can also be modulated by chemical doping. Our strategies can, in principle, be generalized to other two-dimensional materials, therefore providing new degrees of freedom for designing nanophotonic components capable of tailoring two-dimensional light confinement over a broad wavelength range.; Graphene has great potential for enhancing light - matter interactions in a two-dimensional regime due to surface plasmons with low loss and strong light confinement. Further utilization of graphene in nanophotonics relies on the precise control of light localization properties. Here, we demonstrate the tailoring of electromagnetic field localizations in the mid-infrared region by precisely shaping the graphene into nanostructures with different geometries. We generalize the phenomenological cavity model and employ nanoimaging techniques to quantitatively calculate and experimentally visualize the two-dimensional electromagnetic field distributions within the nanostructures, which indicate that the electromagnetic field can be shaped into specific patterns depending on the shapes and sizes of the nanostructures. Furthermore, we show that the light localization performance can be further improved by reducing the sizes of the nanostructures, where a lateral confinement of lambda(0)/180 of the incidence light can be achieved. The electromagnetic field localizations within a nanostructure with a specific geometry can also be modulated by chemical doping. Our strategies can, in principle, be generalized to other two-dimensional materials, therefore providing new degrees of freedom for designing nanophotonic components capable of tailoring two-dimensional light confinement over a broad wavelength range.
学科主题	Optics
语种	英语
资助机构	National Natural Science Foundation of China [51290271, 11474364, 51290273]; National Key Basic Research Program of China [2013CB933601, 2013YQ12034506]; Guangdong Natural Science Funds Distinguished Young Scholars [2014A030306017]
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79048]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, HJ; Deng, SZ; Xu, NS (reprint author), Sch Elect & Informat Technol, State Key Lab Optoelect Mat & Technol, Guangdong Prov Key Lab Display Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China.
推荐引用方式 GB/T 7714	Zheng, Ze-Bo,Li, Jun-Tao,Ma, Teng,et al. Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures[J]. CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS,2017,6:-.
APA	Zheng, Ze-Bo.,Li, Jun-Tao.,Ma, Teng.,Fang, Han-Lin.,Ren, Wen-Cai.,...&Xu, NS .(2017).Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures.CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS,6,-.
MLA	Zheng, Ze-Bo,et al."Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures".CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS 6(2017):-.