Enhanced emission from an ensemble of inverted atoms in the presence of another isotopic species

Abstract The emission flux from a slab of two homogeneously-broadened isotope species ensembles is analyzed. Initially one of the species is coherently nearly all inverted, the atoms of the other species are in the ground state. The slab thickness is less than the wavelength of the resonant transition radiation. In particular, in a narrow band of the slab thickness centered at 237 λ /500, the emission flux from the species mixture for different detunings between the two species resonance frequencies is shown to be greatly enhanced over its value where only a single species is present.