Fig. 1. Schematic of the SG-III laser facility.

Fig. 2. Schematic of one of the 48 beamlines in the SG-III laser facility. CM: cavity mirror; DM: deformable mirror; AMP: amplifier plate; L: lens; CSF/TSF: cavity/transport spatial filter; WP: wedge plate; TM: transport mirror; FCU: frequency conversion unit; BSG: beam sampling grating; CPP: continuous phase plate; WFL: wedged focus lens; PMU: parameter measurement unit; DS: debris shield; FD: front end; PAM: preamplifier; LPC: large pockels cell; BM: beam mirror; BR: beam reverser.

Fig. 3. The schematic of the U-tum reverser and its influence on the wavefront distortion.

Fig. 4. Schematics of the two adaptive optics systems in SG-III laser facility.

Fig. 5. The tested result of the small signal gain coefficients of each beamline in SG-III.

Fig. 6. Experimental results of the 7.5 kJ $1{\it\omega}$ output capability.

Fig. 7. 7-hour test of the energy stability in front-end system.

Fig. 8. Energy stabilizing result in preamplifier system.

Fig. 9. The experimental gain curve in the main amplifiers in SG-III.

Fig. 10. The frequency conversion curve tested in A6N4.

Fig. 11. Complex pulse shape with $300:1$ contrast ratio in SG-III. Reproduced from Ref. [13].

Fig. 12. Experimental result of the pre-compensation for the FM-to-AM effect.

Fig. 13. Smoothing effect by CPP and $2.5~\text{GHz}+19.9~\text{GHz}$ SSD. Left: initial focal spot; Right: smoothed focal spot.

Fig. 14. Measured focal spot patterns. (a) 2D pattern only with CPP, (b) 1D pattern only with CPP, (c) 2D pattern both with CPP and PS crystal, (d) 1D pattern both with CPP and PS crystal. Reproduced from Ref. [18].

Fig. 15. PS effect calculated by FOPAI curves. Reproduced from Ref. [18].

Fig. 16. Correction effect of the AO system. (a) and (b) give the $3{\it\omega}$ focal spots on the target before and after AO correction, and (c) shows the wavefront distortion value of the whole 48 beamlines before and after AO correction.