中国物理B ›› 2019, Vol. 28 ›› Issue (10): 104207-104207.doi: 10.1088/1674-1056/ab3f21

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Properties of multi-Gaussian Schell-model beams carrying an edge dislocation propagating in oceanic turbulence

Da-Jun Liu(刘大军), Yao-Chuan Wang(王耀川), Gui-Qiu Wang(王桂秋), Hong-Ming Yin(尹鸿鸣), Hai-Yang Zhong(仲海洋)   

  1. Department of Physics, College of Science, Dalian Maritime University, Dalian 116026, China
  • 收稿日期:2019-05-24 修回日期:2019-06-27 出版日期:2019-10-05 发布日期:2019-10-05
  • 通讯作者: Da-Jun Liu E-mail:liudajun@dlmu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11604038, 11875096, and 11404048) and the Fundamental Research Funds for the Central Universities, China (Grant Nos. 3132019182 and 3132019184).

Properties of multi-Gaussian Schell-model beams carrying an edge dislocation propagating in oceanic turbulence

Da-Jun Liu(刘大军), Yao-Chuan Wang(王耀川), Gui-Qiu Wang(王桂秋), Hong-Ming Yin(尹鸿鸣), Hai-Yang Zhong(仲海洋)   

  1. Department of Physics, College of Science, Dalian Maritime University, Dalian 116026, China
  • Received:2019-05-24 Revised:2019-06-27 Online:2019-10-05 Published:2019-10-05
  • Contact: Da-Jun Liu E-mail:liudajun@dlmu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11604038, 11875096, and 11404048) and the Fundamental Research Funds for the Central Universities, China (Grant Nos. 3132019182 and 3132019184).

摘要: Based on the theory of coherence, the model of multi-Gaussian Schell-model (MGSM) beams carrying an edge dislocation generated by the MGSM source is introduced. The analytical cross-spectral density of MGSM beams carrying an edge dislocation propagating in oceanic turbulence is derived, and used to study the evolution properties of the MGSM beams carrying an edge dislocation. The results indicate that the MGSM beam carrying an edge dislocation propagating in oceanic turbulence will evolve from the profile with two intensity peaks into a flat-topped beam caused by the MGSM source, and the beam will evolve into the Gaussian-like beam due to the influences of oceanic turbulence in the far field. As the propagation distance increases, the MGSM beam carrying an edge dislocation propagating in oceanic turbulence with the larger rate of dissipation of mean-squared temperature (χT) and ratio of temperature to salinity contribution to the refractive index spectrum (ε) or the smaller rate of dissipation of kinetic energy per unit mass of fluid (ξ) evolves into the flat-topped beam or a Gaussian beam faster.

关键词: oceanic turbulence, multi-Gaussian Schell-model source, edge dislocation, laser propagation, average intensity

Abstract: Based on the theory of coherence, the model of multi-Gaussian Schell-model (MGSM) beams carrying an edge dislocation generated by the MGSM source is introduced. The analytical cross-spectral density of MGSM beams carrying an edge dislocation propagating in oceanic turbulence is derived, and used to study the evolution properties of the MGSM beams carrying an edge dislocation. The results indicate that the MGSM beam carrying an edge dislocation propagating in oceanic turbulence will evolve from the profile with two intensity peaks into a flat-topped beam caused by the MGSM source, and the beam will evolve into the Gaussian-like beam due to the influences of oceanic turbulence in the far field. As the propagation distance increases, the MGSM beam carrying an edge dislocation propagating in oceanic turbulence with the larger rate of dissipation of mean-squared temperature (χT) and ratio of temperature to salinity contribution to the refractive index spectrum (ε) or the smaller rate of dissipation of kinetic energy per unit mass of fluid (ξ) evolves into the flat-topped beam or a Gaussian beam faster.

Key words: oceanic turbulence, multi-Gaussian Schell-model source, edge dislocation, laser propagation, average intensity

中图分类号:  (Ocean optics)

  • 42.68.Xy
42.68.Ay (Propagation, transmission, attenuation, and radiative transfer) 42.25.Bs (Wave propagation, transmission and absorption)