▎ 摘　　要

We report the value of non-linear optical parameters in graphene oxide (GO) using the Z-scan technique. The value of the non-linear refractive index eta(2), non-linear absorption coefficient beta and the complex value of third order susceptibility chi((3)) in samples with different concentrations of GO diluted in distilled water were determined. The value of these parameterswere obtained directly from the measurement of normalized transmittance of each sample as a consequence of its non-linear response when are exposed to electromagnetic radiation from a Nd:YAG laser emitting at 532 nm in CW mode. In addition, we found that the parameters eta(2), beta and chi((3)) growth by increasing excitation laser power, where beta showed an high order of magnitude around similar to 10(-2) cm/W. (C) 2020 Elsevier B.V. All rights reserved.