- The pump-to-laser beam overlap and the cell length of static diode-pumped Cs lasers are crucial parameters for optimization of these lasers. In a previous publication we modeled the influence of the pump-to-laser beam overlap on the performance of Ti: Sapphire pumped cesium vapor laser (T. Cohen, E. Lebiush, I. Auslender, BD Barmashenko and S. Rosenwaks, Opt. Exp. 24, 14374 (2016)). In the present paper we report on experiments and modeling in progress on diode pumped cesium vapor laser.