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Abstract

Nonlinear optical properties of Rhodamine 6G dye doped epoxy resin with Al2O3 nanoparticle at different concentration were studied by using EZ-scan technique to evaluate the nonlinear parameters such as nonlinear absorption coefficient (ß), nonlinear index of refraction (n2) and the third order optical nonlinearity. The samples with the nanoparticle exhibit negative sign of the nonlinear refractive index n2 indicates that the samples exhibit self-defocusing optical nonlinearity. The samples with nanoparticle showed reverse saturation absorption (RSA) in open EZ-scan. The nonlinear refractive index n2, the nonlinear absorption coefficient ß and the third-order optical susceptibility (3) values are of the order of 10-9 cm2/W, (1-4) cm/W and 10-6 V2/m2 respectively.