Scintillation reduction by use of multiple Gaussian laser beams with different wavelengths

Avner Peleg, Jerome V. Moloney

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

We study the scintillation index of N partially overlapping collimated lowest order Gaussian laser beams with different wavelengths in weak atmospheric turbulence. Using the Rytov approximation, we calculate the initial beam separation that minimizes the longitudinal scintillation. Further reduction of the longitudinal scintillation is obtained by optimizing with respect to both beam separation and spot size. The longitudinal scintillation of the optimal N-beam configurations is inversely proportional to N, resulting in a 92% reduction for a nine-beam system compared with the single beam value. The radial scintillation values for the optimal N-beam configurations are significantly smaller than the corresponding single beam values.

Original languageEnglish (US)
Pages (from-to)883-885
Number of pages3
JournalIEEE Photonics Technology Letters
Volume19
Issue number12
DOIs
StatePublished - Jun 15 2007

Keywords

  • Laser beam transmission
  • Optical turbulence
  • Partially coherent light
  • Scintillation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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