Synthesis and nonlinear optical studies of organometallic Cobalt (II) with polyurethane elastomer

Polyurethane (PU) composites containing Cobalt II acetylacetonate were prepared. The Z-scan methods were used for observing and detecting third-order nonlinear optical properties of related samples. The nonlinear effects of samples were increased by adding 1 wt.% of Cobalt II acetylacetonate into the polymer in comparison with blanks. However, those features were decreased again through higher loading (up to 2.0 wt.%) of Cobalt II acetylacetonate. The nonlinear refractive indices and nonlinear absorption coefficients of the synthesized samples were obtained in the order of 10(-8) (cm(2)/W) with a negative sign and 10(-3) (cm/W), respectively. All the results suggest that the nonlinear coefficients of the synthesized samples can be controlled by Cobalt II acetylacetonate contents in PU. This organometallic material can be a good candidate for the optical devices, as well. (C) 2016 Elsevier GmbH. All rights reserved.