Abstract
Abstract An experimental study of the laser characteristics, by energy transfer machanism of a new dye: 7-Diethylamino-3-Cyano Benzimidazo (1,2-a) Quinoline (DCBQ) using 7-Diethylamiho-4-Methyl Coumarin (Coumarin 1,DAMC) as a donor are presented. The effect of the concentration of the components on the lasing characteristics like peak power and wavelength of lasing of dye mixture is studied and discussed. The effect of the solvents on the fluorescence energy transfer has also been studied to ascertain the nature of the transfer mechanism involved. The fluorescence energy transfer rate constant(kET) and the critical transfer distance(Ro) are experimentally determined and also calculatee theoretically. These results indicate the dominance of resonance transfer in this energy transfer dye laser.
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