Liu, XianlongLiang, ChunhaoYuan, YangshengCai, YangjianEyyuboglu, Halil T.2017-02-232025-09-182017-02-232025-09-182013Liu, X...et al. (2013). Scintillation properties of a truncated flat-topped beam in a weakly turbulent atmosphere. Optics and Laser Technology, 45, 587-592. http://dx.doi.org/10.1016/j.optlastec.2012.05.0280030-39921879-2545https://doi.org/10.1016/j.optlastec.2012.05.028https://hdl.handle.net/123456789/12899We derive derive an explicit expression for the scintillation index of a truncated flat-topped (FT) beam in a weakly turbulent atmosphere. Under suitable conditions, the derived formula reduces to the expression for the scintillation index of a FT beam or Gaussian beam without truncation. The scintillation properties of a truncated FT beam in a weakly turbulent atmosphere are illustrated numerically. It is found that the truncation parameter has strong influence on the scintillation properties, and the advantage of a FT beam over a Gaussian beam for reducing the negative influence of turbulence disappears gradually as the truncation parameter decreases. (C) 2012 Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessFlat-Topped BeamTurbulent AtmosphereScintillationArticle10.1016/j.optlastec.2012.05.0282-s2.0-84866508601