Fig. 1. Schematic diagram of the double-control four-level atomic system

Fig. 2. Intensity and phase distributions of the vortex Airy beam at different distances

Fig. 3. Propagation dynamics of vortex Airy beams passing through the electromagnetically induced transparency medium, for different Rabi frequencies: (a) Ωc'=0.6×108Hz、(b) Ωc'=1.0×108Hz、(c) Ωc'=1.4×108Hz、(d) Ωc'=1.8×108Hz

Fig. 4. Intensity of the vortex airy beams on the position (z=850 mm、x=0.7486 mm、y=0.7486 mm) modulated by the Rabi frequency