Abstract
The dual-color laser phenomena in two-dimensional (2D) scattering gain media was investigated by simultaneously solving Maxwell's equations and rate equations of electronic population. The results indicate that dual-color laser emission from a dye solution with scattering nanoparticles is affected by the number of density scatterers in the dye solution and the dye concentration. Increasing the concentration of the dye increases the spectral intensity of the dimers, and increasing the pump energy produces major radiative and non-radiative energy transfers from monomers to dimers. If the pump energy is at a very low level, regardless of the dye concentration, the spectra are broadened. Simultaneous laser emissions at desired wavelengths in scattering gain media can be achieved by using a dye mixture.
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