Fig. 1. Intensity distributions of the cBG beams

Fig. 2. Phase distributions of the cBG beams

Fig. 3. Orbital angular momentum spectrum

Fig. 4. The relative crosstalk energy cl1 in the atmosphere varies with the initial angular quantum number l₂，v_x=2m/s

Fig. 5. The relative crosstalk energy clm，v_x=2m/s

Fig. 6. Intensity distributions of the rotating cBG beam in free space，k_r（1）=150 m^-1，k_r（2）=200 m^-1

Fig. 7. Intensity distributions in the atmosphere

Fig. 8. Orbital angular momentum spectrum in the atmosphere

Fig. 9. The relative crosstalk energy cl1 of the rotating cBG beams in the atmosphere varies with the propagation distance z，k_r（1）=150 m^-1