Spatio-temporal dynamics of a system of two-isotope ensembles where initially only one of the species was selectively excited

- The Maxwell-Bloch equations for two isotopes in a slab are solved numerically.
- Initially one of the species is partially excited while the other is in the ground state.
- The initial degree of excitation and the frequency detuning determine the emission dynamics.
- The spatial profile of the population differences is found to be non-uniform.