Fig. 1. Optical path diagram of wavefront aberration correction of Yb:YAG laser with double deformable mirrors

Fig. 2. Spatial and temporal distribution of wavefront aberration in pumped slab laser

Fig. 3. First 100 mode coefficients of laser output wavefront aberration

Fig. 4. [in Chinese]

Fig. 5. [in Chinese]

Fig. 6. Legendre aberration correction residual by hexagonal arrangement of DM actuator

Fig. 7. Correction effect of DM with 13×13 actuators on Legendre aberration

Fig. 8. Correction effect of DM with 14×14 actuators on Legendre aberration

Fig. 9. Correction effect of DM with 15×15 actuators on Legendre aberration

Fig. 10. The curve between hinge value and condition number of AO system reconstruction matrix

Fig. 11. The simulation results of different hinge values on the same wavefront correction

Fig. 12. The outline drawing of 1D DM

Fig. 13. （a） Stress in simulation of 1D DM; （b） Strain

Fig. 14. The outline drawing of 1D DM

Fig. 15. Actuator arrangement of DM of 95 units

Fig. 16. （a） Stress; （b） Strain; （c） Flow field distribution

Fig. 17. Simulation results when the hinge value is 33.5%

Fig. 18. The outline drawing of DM of unit 95 units

Fig. 19. The test platform of 2D and 1D DMs

Fig. 20. （a） Response of 2D DM; （b） The hinge value; （c） Static surface shape

Fig. 21. （a） Hydrostatic test; （b） Surface deformation during water flowing; （c） The change of surface shape during water outlet plugging up

Fig. 22. （a） Test response results of channel 6 of 1D DM; （b） Static surface shape

Fig. 23. （a） Internal circulation cooling device; （b） The change of surface shape under the high power laser irradiation

Fig. 24. The picture of 1D and 2D DMs

Fig. 25. （a） Primitive wavefront; （b） The theoretical adjust result by 1D DM; （c） The actual adjust result by 1D DM

Fig. 26. （a） The theoretical adjust result by 2D DM; （b） The actual adjust result by 2D DM

Fig. 27. (a) The open-loop wavefront; (b) The open-loop far field spots; (c) The close-loop wavefront; (d) The close -loop far field spots

Fig. 27. [in Chinese]

Fig. 28. （a） Test curve of the open-loop beam quality; （b） Test curve of the closed-loop beam quality