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The purpose of this research look into the consequences of different concentrations (0.01mM, 0.05 mM, 0.1mM,0.25 mM, 0.5 mM) on nonlinear refraction n2 of Methyl Orange (MO) Dye in various spectral areas. The results of the investigation reveal that the effects of the concentration are effected by the excitation wavelength. using (Z-Scan) approach,Non-linear measurements were performed by using (CW) lasers at wavelengths (405nm, 473 nm, 532nm, 650nm) and with different laser power of (13.15 mw,9.85 mw, 34.74mw) respectively, and effect of add nanomaterial on non linear optical properties. The results showed that Nonlinear refraction index coefficient increased with increasing the concentration of samples. [ABSTRACT FROM AUTHOR]

The Organic dyes are appealing optical substances in many applications in bio photonic and photonic. The present research includes study Non-linear optical peculiarities of Rhodamine 6G in disaccorded concentrations (0.03m M, 0.05 m M,0.1mM),a The nonlinear calculated included using (Z-Scan) technique. The measurements were achieved with using (CW) lasers at wavelengths (405nm, 473 nm, 532nm, 650nm) and with laser power of (1.49 mw, 4.35mw, 11, 56 mw, 5mw) respectively. The results showed that Nonlinear refraction index coefficient and nonlinear absorption coefficients increased with increasing the concentration of samples, the nonlinear refractive index n2 of Rhodamine 6G dye dissolved in Ethanol were detect that based upon the wave length of laser with concentration of sample. [ABSTRACT FROM AUTHOR]