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

Avner Peleg; Jerome V. Moloney

doi:10.1109/LPT.2007.897559

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

Avner Peleg, Jerome V. Moloney

Research output: Contribution to journal › Article › peer-review

32 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 language	English (US)
Pages (from-to)	883-885
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	19
Issue number	12
DOIs	https://doi.org/10.1109/LPT.2007.897559
State	Published - 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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10.1109/LPT.2007.897559

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title = "Scintillation reduction by use of multiple Gaussian laser beams with different wavelengths",

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.",

keywords = "Laser beam transmission, Optical turbulence, Partially coherent light, Scintillation",

author = "Avner Peleg and Moloney, {Jerome V.}",

note = "Funding Information: Manuscript received September 19, 2006; revised February 27, 2007. This work was supported by the Air Force Office for Scientific Research, Air Force Material Command, USAF, under Grant AFOSR FA9550-04-1-0213. The work of J. V. Moloney was supported by the Alexander von Humboldt Foundation. The authors are with the Arizona Center for Mathematical Sciences, University of Arizona, Tucson, AZ 85721 USA. Digital Object Identifier 10.1109/LPT.2007.897559",

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AU - Peleg, Avner

AU - Moloney, Jerome V.

N1 - Funding Information: Manuscript received September 19, 2006; revised February 27, 2007. This work was supported by the Air Force Office for Scientific Research, Air Force Material Command, USAF, under Grant AFOSR FA9550-04-1-0213. The work of J. V. Moloney was supported by the Alexander von Humboldt Foundation. The authors are with the Arizona Center for Mathematical Sciences, University of Arizona, Tucson, AZ 85721 USA. Digital Object Identifier 10.1109/LPT.2007.897559

PY - 2007/6/15

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N2 - 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.

AB - 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.

KW - Laser beam transmission

KW - Optical turbulence

KW - Partially coherent light

KW - Scintillation

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JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 12

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

Abstract

Keywords

ASJC Scopus subject areas

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