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Spectral dependence of purely-Kerr-driven filamentation in air and argon

Loriot, V.
Hertz, E.
Faucher, O.
Lavorel, B.
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Published in Physical Review. A. 2010, vol. 82, no. 3, p. 033826
Abstract Based on numerical simulations, we show that higher-order nonlinear indices (up to n8 and n10, respectively) of air and argon have a dominant contribution to both focusing and defocusing in the self-guiding of ultrashort laser pulses over most of the spectrum. Plasma generation and filamentation are therefore decoupled. As a consequence, ultraviolet wavelength may not be the optimal wavelength for applications requiring to maximize ionization.
Keywords Beam trappingSelf focusing and defocusingSelf-phase modulationOptical solitonsOptical constants
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ETTOUMI, Wahb et al. Spectral dependence of purely-Kerr-driven filamentation in air and argon. In: Physical Review. A, 2010, vol. 82, n° 3, p. 033826. https://archive-ouverte.unige.ch/unige:54906

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Deposited on : 2015-03-30

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