TY - JOUR T1 - Study of the Fluorescence Energy Transfer in Laser Active Medium Molecules (Acridine Orange and Rhodamine B) Dyes AU - Ali Naser, Tamara AU - Hassan Aboud, Lazem AU - Husain Ibrahim, Jabbar JO - Journal of Engineering and Applied Sciences VL - 13 IS - 11 SP - 3960 EP - 3964 PY - 2018 DA - 2001/08/19 SN - 1816-949x DO - jeasci.2018.3960.3964 UR - https://makhillpublications.co/view-article.php?doi=jeasci.2018.3960.3964 KW - Dye laser KW -optical properties KW -energy transfer KW -donor-acceptor pair KW -level of fluorescence KW -refraction index AB - In this research was the study of the phenomenon of fluorescence energy transfer between two laser dyes. One models have been prepared in this study, the acceptor dye (acridine orange) with the donor dye (rhodamine B). The absorption spectra and the emission spectra of the acridine orange and rhodamine B dyes were studied with different concentrations (1×10-3, 1×10-4, 1×10-5) mL in ethanol solvent. The results of the study showed a significant increase in the intensity of the fluorescence spectra of the mixing samples compared to the dyes individually for all the prepared samples. We note change all the linear optical properties (absorption coefficient, refraction index, quantum yield, lifetime of the energy level of fluorescence) of (acceptor+donor ) samples prepared compared to what it was before mixing. ER -