Melle Hernández, SoniaCalderón, Oscar GómezEgatz-Gómez, AnaCabrera Granado, EduardoCarreño Sánchez, FernandoAntón Revilla, Miguel Ángel2023-06-182023-06-182015-10-261559-128X10.1364/AO.54.009143https://hdl.handle.net/20.500.14352/23068We experimentally study the temporal dynamics of amplitude-modulated laser beams propagating through a water dispersion of graphene oxide sheets in a fiber-to-fiber U-bench. Nonlinear refraction induced in the sample by thermal effects leads to both phase reversing of the transmitted signals and dynamic hysteresis in the input- output power curves. A theoretical model including beam propagation and thermal lensing dynamics reproduces the experimental findings. © 2015 Optical Society of America.engjournal articlehttp://dx.doi.org/10.1364/AO.54.009143restricted access535.57Thermal lensingNonlinear opticsNonlinear optical materialsThermo-optical materials.Física de materialesÓptica no líneal2209.13 Óptica no lineal