Open AccessThe nonlinear optical properties of coupling and decoupling graphene layers
Author(s) -
Wei Chen,
Guang Wang,
Shiqiao Qin,
Chaocheng Wang,
Jingyue Fang,
Junli Qi,
Xueao Zhang,
Li Wang,
Honghui Jia,
Shengli Chang
Publication year - 2013
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4802889
Subject(s) - graphene , materials science , refractive index , nonlinear system , decoupling (probability) , femtosecond , coupling (piping) , monolayer , nonlinear optics , optoelectronics , photonics , condensed matter physics , optics , nanotechnology , physics , laser , composite material , quantum mechanics , control engineering , engineering
Third-order optical nonlinearities of graphene from monolayer to multilayers were investigated in the femtosecond regime, and the contribution of interlayer coupling to the nonlinearities was studied. The nonlinear refractive index γ of the order of 10−9 cm2/W and the nonlinear absorption coefficient β of 10−6 cm/W were obtained. By systematically investigating the nonlinear optical properties with the number of layers and comparing the coupling graphene with the decoupling superimposed graphene, we found that the coupling of interlayers has large effect upon the nonlinear refraction. These results provide an effective approach for developing graphene-based nonlinear photonic devices
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