Effect of Laser Organic Dyes on the Optical Properties of (PVA-PEG) Blend

This paper discovers the study effect of Rhodamine Bdye (RB) addition on optical properties of polyvinylalcohol (PVA) and Polyethylene glycol (PEG) blend. The composites samples were prepared by adding (RB) percentages of 0, 0.013, 0.015, 0.017 and 0.020 wt. % to the (PVA-PEG) blend. The films were prepared by castingmethod with different thicknesses. The absorption noted in range of wavelength (200 - 800) nm. While the optical constants such as extinction coefficient, absorption coefficient, energy gap of the forbidden transition, indirect taj/improving of(RB) concentration. The energy gap reduced with reduction the weight percentages of (RB).