Abstract

Wave structure function, coherence length, and angle-of-arrival variance are derived analytically for a Gaussian beam propagating in an underwater turbulent medium. The recently introduced oceanic turbulence optical power spectrum model [J. Opt. Soc. Am. A 37, 1614 (2020) [CrossRef]  ] is used, and results are obtained for the case of large separations. The effect of temperature, salinity, rates of dissipation of mean-squared temperature and energy, temperature-salinity gradient ratio, wavelength, and aperture diameter, is presented. Further, a Gaussian beam is compared with the plane and spherical waves in terms of their effect on wave structure function, coherence length, and angle-of-arrival fluctuations. The presented results can be beneficial to set the parameters of imaging and communication systems using a Gaussian beam in an underwater turbulent medium and can be used for the optimization of the design of these systems.

© 2021 Optica Publishing Group

Analysis of wander and spreading of an optical beam by using the oceanic turbulence optical power spectrum

Yalçın Ata, Yahya Baykal, and Muhsin Caner Gökçe
J. Opt. Soc. Am. B 39(8) 2129-2137 (2022)

Aperture-averaged scintillation for a weak underwater turbulence-affected Gaussian beam using the OTOPS model

Yalçın Ata and Italo Toselli
J. Opt. Soc. Am. A 40(3) 492-501 (2023)

Spatial coherence length and wave structure function for plane waves transmitted in anisotropic turbulent oceans

Guoqing Zhao, Qingze Yan, Lin Yu, Lifa Hu, and Yixin Zhang
J. Opt. Soc. Am. A 40(8) 1602-1611 (2023)

Adaptive optics correction in natural turbulent waters

Yalçın Ata and Olga Korotkova
J. Opt. Soc. Am. A 38(4) 587-594 (2021)

Temporal statistics of irradiance fluctuations in an underwater turbulent medium

Yalçın Ata and Kamran Kıasaleh
J. Opt. Soc. Am. A 39(5) 979-986 (2022)