NONLINEAR OPTICAL PROPERTIES OF ACID ORANGE 10 DYE BY Z-SCAN TECHNIQUE USINGAr+LASER

Abstract

Nonlinear optical (NLO) properties of the aqueous solution of Acid Orange 10 dye have been studied using the closed aperture and open aperture Z-scan technique at different concentrations and various powers of Ar+laser at 488 nm wavelength. The nonlinear refractive index (n2) shows negative nonlinearity for all concentrations studied, and it is measured to be -13.5 × 10-9cm2/ W at 0.05 mM concentration. Moreover, the nonlinear refractive index is found to vary with intensity and concentration. The nonlinear absorption coefficient (β) is measured to be -3.8 × 10-4cm/W . Optical limiting behavior has been demonstrated for this dye. These results show that Acid Orange 10 dye has potential applications in nonlinear optics.