Spectral and non-linear Optical properties for Mixture of Organic Laser Dyes doped PVA Polymer and Ag Nanoparticles

Document Type : Research Paper

Authors

Physics Department, College of Science, University of Babylon, Babylon, Hillah, Iraq

Abstract

ABSTRACT
In this work, Spectral and non-linear optical properties for mixture of two organic laser dyes Coumarin 344 and Fluorescein dissolved in ethanol solvent at concentrations (3×10-5)M for different ratios (1:1, 2:1, 3:1 and 4:1) at room temperature and thim films has been studied.Thin films samples prepared from dyes solutions via drop-casting method at (10-3 M). The quantum efficiency increased while life time decreased when increment ratio .The results showed that these thin films possess very large nonlinear refraction as compared with dyes as solutions. The measurements indicated that the nonlinear refractive index increased linearly with the nonlinear phase shift. The result imply that it can be used as active laser medium and potential medium for various optoelectronic applications. The measurements indicated that the nonlinear refractive index increased linearly with the nonlinear phase shift. The result imply that it can be used as active laser medium and potential medium for various optoelectronic applications.

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