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Multifilamentation of femtosecond laser pulses propagating in turbulent air near the ground

Spindler, Gerhard and Paunescu, Gabriela (2009) Multifilamentation of femtosecond laser pulses propagating in turbulent air near the ground. Applied Physics B, 96 (1), pp. 185-191. Springer Berlin / Heidelberg. DOI: [10.1007/s00340-009-3409-z]. ISSN 0946-2171 (Print) 1432-0649 (Online).

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Official URL: http://springerlink.com/

Abstract

The propagation of femtosecond laser pulses in turbulent air near the ground is analyzed. Confining to a power regime distinctly above the critical power for self-focusing, i.e. , and concentrating on initial peak intensities around 2.5 x 10^11W/cm^2 , the onset and early evolution of multiple filaments are addressed. Making use of the turbulence phase-screen method, numerical simulations of the pulse propagation indicate that turbulence fields with spatial scales below 6 mm are able to induce the onset of multifilamentation. An analytical linear plane wave perturbation model of the underlying modulation instability of the pulse front is introduced in support of the computational results. By this means, insight into the amplification of an initial perturbation of the pulse front from the point of view of the spatial frequency domain is given.

Document Type:Article
Title:Multifilamentation of femtosecond laser pulses propagating in turbulent air near the ground
Authors:
AuthorsInstitution or Email of Authors
Spindler, Gerhardgerhard.spindler@dlr.de
Paunescu, Gabrielagabriela.paunescu@dlr.de
Date:3 March 2009
Journal or Publication Title:Applied Physics B
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:96
DOI:[10.1007/s00340-009-3409-z]
Page Range:pp. 185-191
Editors:
EditorsEmail
Träger, FrankTraeger@physik.uni-kassel.de
Publisher:Springer Berlin / Heidelberg
Series Name:Lasers and Optics
ISSN:0946-2171 (Print) 1432-0649 (Online)
Status:Published
Keywords:Femtosecond Pulse Laser, Propagation, Filamentation, Air Turbulence, spatial solitons, numerical simulation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Dr.rer.nat. Gerhard Spindler
Deposited On:29 Oct 2009 22:20
Last Modified:07 Feb 2013 20:46

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