Transformation of the spatial coherence of pulsed laser radiation transmitted in the nonlinear regime through a multimode graded-index fibre

Journal Article · Tue Jan 31 00:00:00 EST 2006 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2006V036N01ABEH013099· OSTI ID:21456832

Kitsak, A I ^[1]; Kitsak, M A ^[2]

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1. B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk (Belarus)
2. Department of Physics, Boston University, Boston (United States)

A method is proposed for transformation of the spatial coherence of pulsed laser radiation upon nonlinear interaction in a multimode fibre. The specific features of the transmission of correlation properties of radiation in a graded-index fibre with regular and irregular profiles of the refractive index of the fibre core are analysed. A comparative analysis of the parameter of global degree of radiation coherence at the output of inhomogeneous waveguide and non-waveguide media is performed. It is shown that the most efficient mechanism of decorrelation of pulsed radiation in an optical fibre is fluctuations of the phase of radiation scattered by inhomogeneities of the refractive index of the fibre core induced due to nonlinear interaction with radiation with the spatially inhomogeneous intensity distribution. (control of laser radiation parameters)

• OSTI ID: 21456832
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 36, Issue 1; Other Information: DOI: 10.1070/QE2006v036n01ABEH013099; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COHERENT RADIATION
DISTRIBUTION
FLUCTUATIONS
LASER RADIATION
NONLINEAR PROBLEMS
OPTICAL FIBERS
REFRACTIVE INDEX
TRANSMISSION
WAVEGUIDES
ELECTROMAGNETIC RADIATION
FIBERS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
VARIATIONS