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Scintillations of laser array beams

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Abstract

The scintillation index of a laser array beam is analytically derived and numerically evaluated for weak turbulence conditions. On-axis as well as off-axis positions of the receiver plane are considered. Our graphical illustrations prove that at longer propagation ranges and at some midrange radial displacement parameters, laser array beams exhibit less scintillations, when compared to a fundamental Gaussian beam. However, when compared among themselves, laser array beams tend to have reduced scintillations with rising numbers of beamlets, longer propagation wavelengths, at midrange radial displacement parameters, at intermediate Gaussian source sizes, at bigger inner scales and smaller outer scales of turbulence. However, in this improvement, the number of beamlets does not seem to have a major role.

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Authors and Affiliations

  1. Department of Electronic and Communication Engineering, Çankaya University, Öğretmenler Cad. No. 14 Yüzüncüyıl, 06530, Balgat, Ankara, Turkey

    H.T. Eyyuboğlu & Y. Baykal

  2. Max-Planck-Research-Group, Institute of Optics, Information and Photonics, University of Erlangen, Staudtstr. 7/B2, 91058, Erlangen, Germany

    Y. Cai

Authors
  1. H.T. Eyyuboğlu
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  2. Y. Baykal
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  3. Y. Cai
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Corresponding author

Correspondence to Y. Baykal.

Additional information

PACS

42.25.Dd; 42.25.Ja; 42.25.Kb

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Eyyuboğlu, H., Baykal, Y. & Cai, Y. Scintillations of laser array beams. Appl. Phys. B 91, 265–271 (2008). https://doi.org/10.1007/s00340-008-2966-x

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  • DOI: https://doi.org/10.1007/s00340-008-2966-x

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