Fig. 1. Normalized intensity distribution of a tunable random electromagnetic beam at different propagation distances in free space with parameters set as: (a) and (c) δxxx=δyyx=1  cm, δxxy=δyyy=0.3  cm, (b) and (d) δxxx=δyyy=1  cm, δxxy=δyyx=0.3  cm. (a) and (b) M=1; (c) and (d) M=15.

Fig. 2. Normalized intensity distribution of a tunable random electromagnetic beam at different propagation distances in turbulent atmosphere with M=15. (a) δxxx=δyyx=1  cm, δxxy=δyyy=0.3  cm, (b) δxxx=δyyy=1  cm, δxxy=δyyx=0.3  cm.

Fig. 3. DOP of a tunable random electromagnetic beam in free space and the turbulence.

Fig. 4. DOP of a tunable random electromagnetic beam in turbulence at different propagation distances.

Fig. 5. SOP of a tunable random electromagnetic beam in turbulence at different propagation distances for different correlation structures.