Wide-beam high-power femtosecond pulse propagation in air

Miroslav Kolesik; Michal Mlejnek; Jerome V. Moloney; Ewan M. Wright

doi:10.1117/12.379899

23 March 2000 Wide-beam high-power femtosecond pulse propagation in air

Miroslav Kolesik, Michal Mlejnek, Jerome V. Moloney, Ewan M. Wright

Proceedings Volume 3928, Nonlinear Materials, Devices, and Applications; (2000) https://doi.org/10.1117/12.379899
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

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.

Citation Download Citation

Miroslav Kolesik, Michal Mlejnek, Jerome V. Moloney, and Ewan M. Wright "Wide-beam high-power femtosecond pulse propagation in air", Proc. SPIE 3928, Nonlinear Materials, Devices, and Applications, (23 March 2000); https://doi.org/10.1117/12.379899

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