Effect of silver nanoparticles on generation rhodamine 6G in solution

Abstract

The influence of silver nanoparticle on the spontaneous and stimulated luminescence of rhodamine 6G molecules in aqueous solution was studied. It was determined that under laser beam excitation of the dye solution appears the stimulated luminescence which with increase in laser pumping transforms in stimulated laser emission and superluminescence. In the presence of silver nanoparticle all kinds of emission amplification and the lasing threshold contraction of both types of stimulated emission have been observed. When measuring the emission spectra of solutions for "reflection" superluminescence of rhodamine 6G was found.Dependence of the lasing intensity and the superluminescence intensity on nanoparticle silver concentration correlates with spontaneous fluorescence data.