Vol. 50, Issue 1, pp. 83-94

Vol. 50 Issue 1 pp. 83-94

Spreading properties of a multi-Gaussian Schell-model vortex beam in slanted atmospheric turbulence

Shuai Chang, Yansong Song, Yan Dong, Keyan Dong

Keywords

average intensity, vortex beam, multi-Gaussian Schell-model source, atmospheric turbulence, slanted path

Abstract

The cross-spectral density function of a multi-Gaussian Schell-model vortex (MGSMV) beam propagating through slanted atmospheric turbulence was derived, and the influences of the MGSMV beam parameter and slanted atmospheric turbulence on the spreading properties of a MGSMV beam are studied. One can find that a MGSMV beam propagating in slanted atmospheric turbulence can evolve into the flat-topped beam, and a MGSMV beam with larger index N and topological charge M propagating in slanted atmospheric turbulence will lose the dark hollow center and evolve into the Gaussian beam more slowly than the MGSMV beam with smaller index N and topological charge M. It is also found that a MGSMV beam propagating in slanted atmospheric turbulence with larger strucutre parameter C will evolve into Gaussian beam faster, but the influences of zenith angle α on the spreading properties of MGSMV beam in the far field can be ignored.

Vol. 50
Issue 1
Article No: 07
pp. 83-94

1.83 MB
OPTICA APPLICATA - a quarterly of the Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology