In　an　earlier　article,　we　clarified　conceptual　and　numerical　difficulties　in　applying　previously　published　methods　for　calculating　thermal-gradient-induced　stress　birefringence　to　crystalline　laser　media.　In　this　paper,　we　present　calculations　of　the　stress-induced　birefringence　and　depolarization　loss　in　Yb:YAG　slab　lasers　for　both　straight-through　and　zigzag　propagation.　The　alignment　of　the　crystal＇s　axes　with　respect　to　the　slab　dimensions　is　shown　to　significantly　determine　the　depolarization　loss.　In　a　realistic　slab　laser,　the　depolarization　loss　and　its　dependence　on　axis　orientation　is　shown　to　vary　from　place　to　place　within　the　gain　medium　due　to　changes　in　the　local　thermal　gradient.