Z-scan measurements of the third order optical nonlinearity of C60 doped poly(ethylacetylenecarboxylate) under CW regime

The third order nonlinear optical properties of C60/poly(ethylacetylenecarboxylate) have been studied using Z-scan technique. Experiments are performed using a CW Diode laser at 635 nm wavelength and 20 mW power. The nonlinear absorption coefficient β, nonlinear refractive index n2, Re χ3, and Im χ3 in C60 poly(ethylacetylenecarboxylate) are measured using Z-scan data. Our results show that doping C60 into poly(ethylacetylenecarboxylate) has enhanced and contributed to the increase of the NLO property of the polymer.