Study the effect of thickness change on optical properties of Rhodamine B

Abstract

The optical properties of an organic laser dye, Rhodamine B in water is an important for modern applications, the linear optical properties of the absorption and fluorescence spectrum of the liquid dye were discussed, and the highest value of quantum yield was reached at 96% at a concentration of (10-7) Ml a high quantum yield allow numerous applications of used doped host in optoelectronics applications and after knowing the most appropriate concentrations, a thin film of polyvinyl alcohol was dye, Study of the effect of film thickness on optical properties, the film has optical properties, reflexivity, refractive index, extinction coefficient, real and imaginary isolation constant, and the best thickness was at (4) μm. The energy gap was calculated and was inversely proportional to the thickness.