Nonlinear optical properties of multilayer graphene in the infrared

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	Nonlinear optical properties of multilayer graphene in the infrared
	Demetriou, Giorgos 1; Bookey, Henry T.1,2; Biancalana, Fabio 1; Abraham, Eitan 1; Wang, Yu 3; Ji, Wei 4; Kar, Ajoy K.1
刊名	OPTICS EXPRESS
	2016-06-13
卷号	24 期号:12 页码:13033-13043
ISSN号	1094-4087
英文摘要	A negative value for the nonlinear refraction in graphene is experimentally observed and unambiguously verified by performing a theoretical analysis arising from the conductivity of the graphene monolayer. The nonlinear optical properties of multi-layer graphene are experimentally studied by employing the Z-scan technique. The measurements are carried out at 1150, 1550, 1900 and 2400 nm with a 100-femtosecond laser source. Under laser illumination the multi-layer graphene exhibits a transmittance increase due to saturable absorption, followed by optical limiting due to two-photon absorption. The saturation irradiance I-sat and the two-photon absorption coefficient beta are measured in the operating wavelength range. Furthermore, an irradiance-dependent nonlinear refraction is observed and discriminated from the conventional nonlinear refraction coefficient n(2), which is not irradiance dependent. The values obtained for the irradiance-dependent nonlinear refraction are in the order of similar to 10(-9) cm(2)W(-1), approximately 8 orders of magnitude larger than any bulk dielectrics. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Optics
研究领域[WOS]	Optics
关键词[WOS]	ATOMIC-LAYER GRAPHENE ; 2-PHOTON ABSORPTION ; SATURABLE ABSORPTION ; NEGATIVE REFRACTION ; ULTRAFAST LASER ; MODE-LOCKING ; HIGH-QUALITY ; SINGLE ; FILMS ; OPTOELECTRONICS
收录类别	SCI
语种	英语
WOS记录号	WOS:000378298400057
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/21185]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.Heriot Watt Univ, Sch Engn & Phys Sci, Inst Photon & Quantum Sci, David Brewster Bldg, Edinburgh EH14 4AS, Midlothian, Scotland 2.Fraunhofer Ctr Appl Photon, Technol & Innovat Ctr, 99 George St, Glasgow G1 1RD, Lanark, Scotland 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 4.Natl Univ Singapore, Dept Phys, 2 Sci Dr 3, Singapore 117542, Singapore
推荐引用方式 GB/T 7714	Demetriou, Giorgos,Bookey, Henry T.,Biancalana, Fabio,et al. Nonlinear optical properties of multilayer graphene in the infrared[J]. OPTICS EXPRESS,2016,24(12):13033-13043.
APA	Demetriou, Giorgos.,Bookey, Henry T..,Biancalana, Fabio.,Abraham, Eitan.,Wang, Yu.,...&Kar, Ajoy K..(2016).Nonlinear optical properties of multilayer graphene in the infrared.OPTICS EXPRESS,24(12),13033-13043.
MLA	Demetriou, Giorgos,et al."Nonlinear optical properties of multilayer graphene in the infrared".OPTICS EXPRESS 24.12(2016):13033-13043.