Fig. 1. Temperature distribution of Yb:YAG: (a) temperature of 1 cm Yb:YAG; (b) temperature of 2 cm Yb:YAG.

Fig. 2. (a)  shear stress of Yb:YAG; (b) depolarization of one disk.

Fig. 3. (a) Temperature distribution and (b)  shear stress of Nd:glass.

Fig. 4. Depolarization of one Md:glass disk.

Fig. 5. Non-uniform pumping distribution measured by CCD.

Fig. 6. (a) Temperature distribution and (b)  shear stress of Yb:YAG with non-uniform pumping.

Fig. 7. The depolarization of the laser passing through (a) one disk and (b) twenty disks.

Fig. 8. The residual depolarization caused by light excursion.

Fig. 9. Schematic of depolarization compensation.