• 文献标题:   Measuring the nonlinear refractive index of graphene using the optical Kerr effect method
  • 文献类型:   Article
  • 作  者:   DREMETSIKA E, DLUBAK B, GORZA SP, CIRET C, MARTIN MB, HOFMANN S, SENEOR P, DOLFI D, MASSAR S, EMPLIT P, KOCKAERT P
  • 作者关键词:  
  • 出版物名称:   OPTICS LETTERS
  • ISSN:   0146-9592 EI 1539-4794
  • 通讯作者地址:   Univ Libre Bruxelles
  • 被引频次:   46
  • DOI:   10.1364/OL.41.003281
  • 出版年:   2016

▎ 摘  要

By means of the ultrafast optical Kerr effect method coupled to optical heterodyne detection (OHD-OKE), we characterize the third-order nonlinear response of graphene and compare it to experimental values obtained by the Z-scan method on the same samples. From these measurements, we estimate a negative nonlinear refractive index for monolayer graphene, n(2) = -1.1 x 10(-13) m(2)/W. This is in contradiction to previously reported values, which leads us to compare our experimental measurements obtained by the OHD-OKE and the Z-scan method with theoretical and experimental values found in the literature and to discuss the discrepancies, taking into account parameters such as doping. (C) 2016 Optical Society of America