Measuring the nonlinear refractive index of graphene using the optical Kerr effect method
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Dremetsika, E., Dlubak, B., Gorza, S., Ciret, C., Martin, M., Hofmann, S., Seneor, P., et al. (2016). Measuring the nonlinear refractive index of graphene using the optical Kerr effect method. Optics Letters, 41 (14), 3281-3284. https://doi.org/10.1364/OL.41.003281
© 2016 Optical Society of America.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, n2 = -1.1 × 10-13 m2/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.
External DOI: https://doi.org/10.1364/OL.41.003281
This record's URL: https://www.repository.cam.ac.uk/handle/1810/260932