Related Experiment Video
Updated: Jan 29, 2026

Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging
Published on: April 18, 2025
Propagation and self-healing properties of Bessel-Gaussian beam carrying orbital angular momentum in an underwater
Shengmei Zhao1, Wenhao Zhang2, Le Wang3
1Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications(NUPT), Nanjing, 210003, China. zhaosm@njupt.edu.cn.
Abstract:
In this paper, we report on experimental demonstration of the propagation and self-healing property of Bessel-Gaussian (BG) beam carrying orbital angular momentum (OAM) in an underwater environment. Especially, the effects of topological charge, temperature gradient, and salinity on the transmission and self-reconstruction of BG beam in underwater turbulence are analyzed. The results show that the detection probabilities both for propagation and self-healing greatly decrease with temperature gradient, and gradually decrease with salinity. BG beam has a self-healing property in the underwater environment when the obstruction is quite small. The detection probability greatly decreases with obstruction size, while it gradually decreases with salinity fluctuations for different obstruction sizes. For the same blockage ratio, the smaller topological charge of BG beam is, the better self-healing characteristics the BG beam has.
Related Concept Videos
Angular Momentum
Conservation of Angular Momentum
Atomic Orbitals
Principle of Angular Impulse and Momentum
Angular Momentum about an Arbitrary Axis
The velocity of a mass element comprises its translational velocity and the relative velocity instigated by the body's rotation. Substituting the velocity equation into...
Conservation of Angular Momentum: Application

