[en] We are currently measuring relaxation times in an optically pumped ²³Na vapor target. Our research is directed toward improvements in the optically pumped Na vapor targets used for the production of polarized H^- ions. In this progress report we review the properties of the optically pumped polarized H^- ion source and especially the optically pumped Na vapor target employed in this source as well as discussing the progress of our research on relaxation times in an optically pumped Na vapor target. 30 references, 6 figures, 3 tables