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Proceedings Paper

Wide-beam high-power femtosecond pulse propagation in air
Author(s): Miroslav Kolesik; Michal Mlejnek; Jerome V. Moloney; Ewan M. Wright
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Paper Abstract

Large-scale computer simulations of wide-beam, high-power femtosecond laser pulse propagation in air are presented. Our model, based on the nonlinear Schroedinger equation for the vector field, incorporates the main effects present in air, including diffraction, group-velocity dispersion, absorption and defocusing due to plasma, multiphoton absorption, nonlinear self-focusing and rotational stimulated Raman scattering. The field evolution is coupled to a model that describes the plasma density evolution. Intense femtosecond pulses with powers significantly exceeding the critical power for self-focusing in air are simulated to study turbulence-induced filament formation, their mutual interaction via a low-intensity background, dynamics of the field polarization, and evolution of the polarization patterns along the propagation direction.

Paper Details

Date Published: 23 March 2000
PDF: 9 pages
Proc. SPIE 3928, Nonlinear Materials, Devices, and Applications, (23 March 2000); doi: 10.1117/12.379899
Show Author Affiliations
Miroslav Kolesik, Univ. of Arizona (United States)
Michal Mlejnek, Corning Inc. (United States)
Jerome V. Moloney, Univ. of Arizona (United States)
Ewan M. Wright, Univ. of Arizona and Optical Sciences Ctr./Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 3928:
Nonlinear Materials, Devices, and Applications
Jeffrey W. Pierce, Editor(s)

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