A design of an industrial concentration plant based on the method of selective retardation of condensation in an external laser field was earlier proposed. In this paper, we review recent results on optimization criteria (objective functions) proposed for the search for optimal parameters of this scheme, related to the geometry and operational characteristics of the plant. As constraints in the optimization problem, we consider the influence of the condensation rate and the resonance and nonresonance absorption in a separation cell on its geometry. Separating cells play the role of absorbers in laser resonators.