Fig. 1. Schematic diagrams of water seal device. (a) Main view; (b) sectional view

Fig. 2. Particle size test results of gold standard samples. (a) Standard sample with 100 nm diameter; (b) standard sample with 50 nm diameter; (c) standard sample with 20 nm diameter

Fig. 3. Particle size distributions before and after filtration. (a) Before filtration; (b) after filtration

Fig. 4. Different crystal orientations. (a) Face facing flow; (b) edge facing flow

Fig. 5. KDP crystals grown under different conditions. (a) v=20 mm/s, a= 80 mm/s²; (b) v=80 mm/s, a=80 mm/s²; (c) v=50 mm/s, a=80 mm/s²; (d) v=50 mm/s, a=80 mm/s², translational direction is edge facing flow; (e) v=50 mm/s, a=25 mm/s², translational direction is edge facing flow

Fig. 6. A quarter of the translational period at different growth parameters. (a) v=20 mm/s,a=80 mm/s²; （b） v=80 mm/s， a=80 mm/s²； （c） v=50 mm/s， a=80 mm/s²； （d） v=50 mm/s， a=25 mm/s²

Fig. 7. Comparison of absorption coefficient at different translational velocities

Fig. 8. Comparison of absorption coefficient at different accelerated speeds and directions of motion

Fig. 9. Laser damage probability curves of KDP crystal grown at different translational velocities

Fig. 10. Laser damage probability curves of KDP crystal grown at different accelerated speeds and directions of motion