Abstract.  In this work we analyze the properties of weak probe absorption in a closed three-level atomic system driven by a coherent driving field. The effects of quantum interference from spontaneous emission on the refractive properties in a closed three-level atomic system driven by a coherent pumping field are included into the gain modeling. The density-matrix equations of motion are solved by following perturbation approach and the probe response function is constructed. The probe absorption is obtained by solving Maxwell's equation for propagation of the probe field of slowly varying amplitude. Analytical and numerical simulation of quantum interference effect between the spontaneous decay channels on the absorptive response of a weak probe field in a closed three-level atomic system driven by a coherent driving field, as well as the evolution of probe gain under coherent pumping mode is studied in laser-produced carbon and aluminum plasma with laser intensity > 10¹⁰W/cm².