Propagation characteristics of autofocusing Airy beam with power exponential phase vortex in weak anisotropic oceanic turbulence

Abstract

In the paper, we present the analytical expression of propagation characteristics of the autofocusing Airy beam (AAB) with power-exponent-phase beam carrying orbital angular momentum (OAM) mode (named AAB-PEPV), in weak anisotropic oceanic turbulence. We discuss the influence of the weak oceanic turbulence on the detection probability of the AAB-PEPV beams with different power phases and wavelengths. The results show that the AAB-PEPV beam has a higher detection probability when the anisotropic ocean turbulence has a larger unit mass fluid dynamic energy dissipation rate, a larger internal ratio factor and a higher anisotropy factor. At the same time, the detection probability decreases with the temperature change dissipation rate, the temperature and salinity contribution to the refractive index spectrum. Additionally, for a larger power exponential phase and a longer wavelength, the AAB-PEPV beam has a better anti-interference performance in the underwater channel.

Keywords:

• Airy vortex beam
• orbital angular momentum
• detection probability
• oceanic turbulence

Acknowledgments

The work is supported by Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics(KF201909); partially supported by the National Natural Science Foundation of China (Grant No. 61871234).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The work is supported by Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics (KF201909); Partially supported by the National Natural Science Foundation of China (Grant No. 61871234).