Z-Scan Measurements of the Third-Order Optical Nonlinearity of a $C_{60}$ Doped Poly(dimethylacetylendicarboxylate)

The third-order nonlinear optical properties of $C_{60}$/poly(dimethylacetylendicarboxylate) have been studied using Z-scan technique. Experiments are performed using a CW diode laser at 635 nm wavelength and 26 mW power. The nonlinear absorption coefficient β, nonlinear refractive index n₂, Reχ³, and Imχ³ in $C_{60}$ doped poly(dimethylacetylendicarboxylate) are measured using Z-scan data. Our results show that the values of the nonlinear optical parameters (β, n₂, Reχ³, and Imχ³) of $C_{60}$ doped poly(dimethylacetylendicarboxylate) are smaller than the polymer itself.