Military solid state lasers always need a simultaneous optimization of the brightness, the efficiency and the compacity, even though these targets are opposed. In this paper, we will show how to optimize these three caracteristics by using classical technologies. This lecture only deals with flash pumped garnet materials and with moderate average power (below 100 watts). We first describe thermal effects in cylindrical geometry. Then we will show the consequences of thermal effects on laser beam caracteristics, for the cylindrical and the slab geometries. The last part compares YAG and GGG performances from the efficiency and thermal effects points of view.
T. de Saxce, T. de Saxce,
"Optimization Of Low Divergence-High Power Solid State Lasers", Proc. SPIE 1182, French-Israeli Workshop on Solid State Lasers, (1 December 1989); doi: 10.1117/12.981465; https://doi.org/10.1117/12.981465