Self-recovery effect of orbital angular momentum mode of circular beam in weak non-Kolmogorov turbulence.
It is generally true that the orbital angular momentum (OAM) mode persistently degenerate when a vortex beam propagates in the atmospheric turbulence. Here, however, we unveil an interesting self-recovery effect of OAM mode of the circular beam (CiB) in weak non-Kolmogorov turbulence. We show that the CiB displays the self-focusing effect and has clear focus in the weak non-Kolmogorov turbulence if we choose proper complex parameters, and the detection probability of the original OAM mode reaches the maximum at the focus. Our study proposes a method to alleviate the turbulent effects on OAM-based communication.
Tao
T
Zhang
Yi-Dong
YD
Liu
Jiandong
J
Wang
Pusheng
P
Liu
Yuanjie
Y
Yang