Fig. 1. Experimental setup. (a) Diagram; (b) picture

Fig. 2. Schematic of the off-axis holography. (a) Holographic recording; (b) reconstruction and collection process

Fig. 3. Static calibration results. (a)--(d) Reconstructed images of the standard particle plates; (e) reconstructed image of the standard wire

Fig. 4. Reproduction of the central plane of the atomization field under different pressure conditions.(a) 0.42 MPa; (b) 0.9 MPa; (c) 1.0 MPa

Fig. 5. Reconstructed images of different areas of the atomization field at different positions under 0.42 MPa pressure. (a1)--(a3) Different regions; (b1)--(b3) z=0 mm; (c1)--(c3) z=63.4 mm

Fig. 6. Particles distributions on different planes under 0.42 MPa pressure. (a) Plane along the spray central; (b) plane perpendicular to the spray 14.1 mm away from the nozzle

Fig. 7. Particles diameter and amount distributions on YZ planes at different positions along the spray direction. (a) x=11.2 mm; (b) x=12.6 mm; (c) x=21.0 mm; (d) x=22.4 mm; (e) x=30.8 mm; (f) x=32.2 mm; (g) x=40.6 mm; (h) x=42.0 mm; (i) x=49.4 mm; (j) x=50.8 mm

Fig. 8. Sauter diameter distributions of spray particles at different z positions in Y=0 plane along the jet axis.(a) Z=1 cm; (b) Z=-1 cm; (c) Z=2 cm; (d) Z=-2 cm; (e) Z=3 cm; (f) Z=-3 cm

Fig. 9. Sauter diameter distributions of spray particles at different y positions in Z=0 plane along the jet axis.(a) Y=1.8 cm; (b) Y=-1.8 cm; (c) Y=0.48 cm; (d) Y=-0.48 cm; (e) Y=0.96 cm; (f) Y=-0.96 cm