Non-Linear and Linear Optical Properties of an Organic Laser Dye Mixture

The present research includes studying the optical linear and nonlinear characteristics of two organic laser dyes: Nile Blue (NB), Malachite Green (MG) and their mixture at room temperature, a mixture proportions involving organic laser dye concentrations (2x10-5,-5 , 4x10-5,-5 , 6x10-5,-5 , 8x10-5)-5 ) MAin chloroform solvent was analyzed. Every produced sample has had its linear optical characteristics examined. Next, the UV-VIS spectra of various dye concentrations dissolved in absolute chloroform solvent have been examined. Finally, the absorption spectra of every sample have been examined. The results demonstrated that at the same wavelength, absorbance rose along with concentrations. The Z-scan technology was utilized to compute the nonlinear absorption coefficient (beta) and nonlinear refractive index x (n2) 2 ) for the produced samples in both open and closed aperture settings. The experiments were carried out using a solid-state laser with a diode pump that runs at 457 nm in wavelength and power of (84 mW). AThe results showed increasing of the nonlinear refractive index while declining nonlinear absorption coefficient for all organic laser dye samples at higher concentrations. Dyes mixture have large optical characteristics, both linear and nonlinear, in comparison to pure dyes.