Optical properties of a number of fluoroacrylate-based fluoropolymers doped with europium β-diketonates by means of supercritical fluid impregnation were studied. The influence of the type of polymer matrix on the process of impregnation of europium β-diketonate molecules into it and the evolution of the optical properties of the doped polymers during a long-term storage were revealed. A comparative analysis of the quantum yield (λexc = 300 and 380 nm) and thermosensitivity of the photoluminescence of Eu3+ ions for different europium β-diketonates and polymer structures was performed. It was demonstrated that the supercritical fluid extraction of unreacted photoinitiator residues from polymer samples makes it possible to substantially enhance their transparency at wavelengths shorter than 300 nm.