Preparation, characterization, and nonlinear optical properties of graphene oxide-carboxymethyl cellulose composite films

The preparation and characterization of free-standing films made of a graphene oxide-carboxymethyl cellulose composite material is described. Characterization was accomplished using transmission electron microscopy , ultraviolet–visible absorption spectroscopy , Raman spectroscopy , and thermal gravimetric analysis . The nonlinear optical performance of this composite material was studied using the open aperture Z-scan technique in the nanosecond regime using a 532-nm wavelength laser . Results show that the composite has nonlinear optical properties that are much enhanced when composited with graphene oxide . All phenomena indicate that the film is a potential candidate for optical limiting applications.