Propagation characteristics of vortex beam using visualization analysis

2019 ◽  
Author(s):  
yan zhang ◽  
minru hao ◽  
yunzhe zhang
Keyword(s):  
Vortex Beam ◽  
Propagation Characteristics ◽  
Visualization Analysis

Propagation characteristics of the perfect vortex beam in anisotropic oceanic turbulence

2020 ◽  
Vol 59 (32) ◽  
pp. 9956
Author(s):  
Zonghua Hu ◽  
Huilong Liu ◽  
Jing Xia ◽  
Aga He ◽  
Hongbo Li ◽  
...  
Keyword(s):  
Vortex Beam ◽  
Propagation Characteristics ◽  
Oceanic Turbulence

scholarly journals Research on Hypergeometric-Gaussian Vortex Beam Propagating under Oceanic Turbulence by Theoretical Derivation and Numerical Simulation

2021 ◽  
Vol 9 (4) ◽  
pp. 442
Author(s):  
Xinguang Wang ◽  
Le Wang ◽  
Shengmei Zhao
Keyword(s):  
Numerical Simulation ◽  
Detection Probability ◽  
Dissipation Rate ◽  
Random Phase ◽  
Simulation Method ◽  
Vortex Beam ◽  
Propagation Characteristics ◽  
Theoretical Derivation ◽  
Oceanic Turbulence ◽  
Phase Screens

In this paper, we use two methods to research the propagation characteristics of a Hypergeometric-Gaussian (HyGG) vortex beam under oceanic turbulence. One is numerical calculation based on the Rytov approximation theory, where the theoretical detection probability equation of the HyGG vortex beam propagating through oceanic turbulence is derived. The other is numerical simulation based on random phase screens model of oceanic turbulence, where the influences generated by oceanic turbulence on the phase and intensity of the propagation beam as well as the propagation of the beam through several independent phase screens, kept at the same distance, have the same effect. The effects of oceanic turbulence parameters and initial beam parameters on the detection probability of the HyGG vortex beam at the receiver are discussed. The results of theoretical derivation are well in agreement with those of numerical simulation, which demonstrated that the numerical simulation method could effectively simulate the complex theoretical derivation. Both results show that with higher dissipation rate of kinetic energy per unit mass of fluid, smaller dissipation rate of mean-squared temperature and lower temperature-salinity contribution ratio comes the better detection probability. Meanwhile, a HyGG vortex beam with smaller topological charge and longer wavelength has a superior turbulent resistance property. It provides a promising way to estimate the propagation characteristics of the optical beams in an underwater environment.

Visualization analysis on stretch-and-fold mechanism of chaotic attractors

2014 ◽  
Vol 1 ◽  
pp. 443-446
Author(s):  
Yutaka Shimada ◽  
Takuya Kobayashi ◽  
Tohru Ikeguchi ◽  
Kazuyuki Aihara
Keyword(s):  
Chaotic Attractors ◽  
Visualization Analysis

Wave Propagation Characteristics on a Pipe-Type Cable in Particular Reference to the Proximity Effect

2013 ◽  
Vol 133 (12) ◽  
pp. 954-960 ◽  
Author(s):  
Akihiro Ametani ◽  
Kazuki Kawamura ◽  
Asha Shendge ◽  
Naoto Nagaoka ◽  
Yoshihiro Baba
Keyword(s):  
Wave Propagation ◽  
Proximity Effect ◽  
Propagation Characteristics
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