Experimental Study on Scintillation Index of Vortex Beam Propagation in Underwater Turbulence

被引：0
|
作者：
Lu T.-F. [1 ]
Liu Y.-X. [1 ]
Pu J.-X. [1 ]
机构：
[1] Fujian Provincial Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen, 361021, Fujian
来源：
Guangzi Xuebao/Acta Photonica Sinica | 2019年 / 48卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Light intensity distribution; Scintillation index; Topological charge; Underwater turbulence; Vortex beam;
D O I：
10.3788/gzxb20194812.1214004
中图分类号：
学科分类号：
摘要：
In order to study the scintillation characteristics of vortex beam and Gaussian beam in underwater turbulence, an experimental system consisting of water turbulence have been set up. In the water tank, the intensity of turbulence is controlled by using a circulating pump, and the scintillation index of the beam is measured by using a scintilloscope. Using this experimental system, the scintillation index of vortex beams and Gaussian beams propagating in underwater turbulence are investigated in detail. It is found that the scintillation indices of vortex beams and Gaussian beams are getting bigger with the increasing of the transmission distance, as well as with the increase of the intensity of underwater turbulence. Within the propagation distance 12.6 meters, the scintillation index of vortex beam with topological charge m=2 is much bigger than that of Gaussian beam. At 5.4 meters, the radial scintillation index of vortex beam with m=6 decreases firstly and then increases in underwater turbulence. In addition, the scintillation index of a topological vortex beam with topological charge m=6 is lower than that of a topological vortex beam with topological charge m=4 after a certain distance of propagation. The research results obtained by our experiments have important value in exploring the application of vortex beam in oceanic turbulence. © 2019, Science Press. All right reserved.
引用
收藏
相关论文
共 17 条
  • [11] Ding C.-L., Liao L.-M., Wang H.-X., Et al., Effect of oceanic turbulence on the propagation of cosine-Gaussian-correlated Schell-model beam, Journal of Optics, 17, 3, (2015)
  • [12] Kashani F.D., Yousefi M., Analyzing the propagation behavior of coherence and polarization degrees of a phase-locked partially coherent radial flat-topped array laser beam in underwater turbulence, Applied Optics, 55, 23, pp. 6311-6320, (2016)
  • [13] Sun R.-D., Guo L.-X., Cheng M.-J., Et al., Propagation characteristics of Bessel-Gaussian beam in anisotropic atmosphere, Acta Photonica Sinica, 47, 12, (2018)
  • [14] Yin X.-L., Sun Z.-W., Cui X.-Z., Et al., Performance of oceanic wireless optical communication systems based on orbital angular momentum multiplexing with spatial diversity, Acta Photonica Sinica, 47, 11, (2018)
  • [15] Liu Y.-X., Chen Z.-Y., Pu J.-X., Propagation of stochastic electromagnetic high-order Bessel-Gaussian beams in the oceanic turbulence, Acta Physica Sinica, 66, 12, pp. 199-205, (2017)
  • [16] Liu Y.-X., Zhang K.-N., Chen Z.-Y., Et al., Scintillation index of double vortex beams in turbulent atmosphere, Optik, 181, 12, pp. 571-574, (2019)
  • [17] Chen Z.-Y., Cui S.-W., Zhang L., Et al., Measuring the intensity fluctuation of partially coherent radially polarized beams in atmospheric turbulence, Optics Express, 22, 15, pp. 141-144, (2014)
12