Zeynidenov A.K., Ibrayev N.K., Kucherenko M.G.
EFFECT OF SILVER NANOPARTICLES ON ELECTRONIC TRANSACTIONS IN THE DYE MOLECULES AND LASING CHARACTERISTICS OF LIQUID LASERS ON THEIR BASIS ^{[№ 9 ' 2014]}
The influence of silver nanoparticles (NPS) on spontaneous and induced transitions is investigated in molecules of rhodamine 6G in aqueous solutions. A non-monotonic change of the dye fluorescence intensity is found with increasing concentration of the nanoparticles (NP) and constant life time 3.2 ns. The maximum of the light intensity was observed at concentrations of NP of the order of 10^-4 mol/L. In the dye absorption spectra the monotonous reduction of optical density is fixed, with growth of concentration of NP. Furthermore, an increase of the radiation intensity on the length of the wave 559 nm intensified by induced transitions and the narrowing of the laser generation band is observed after addition Ag NP into the dye solution. the simplest interpretation of the observed effects is given in the model of spontaneous and induced dipole transitions.