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From higher-order Kerr nonlinearities to quantitative modeling of 3rd and 5th harmonic generation in argon
P. Béjot, E. Hertz, B. Lavorel +3
The recent measurement of negative higher-order Kerr effect (HOKE) terms in gases has given rise to a controversial debate, fed by its impact on short laser pulse propagation. By c…
Curved plasma channels: Kerr lens and Airy prism
Jérôme Kasparian, Jean-Pierre Wolf
We analytically calculate the transverse energy fluxes that would be respectively induced in high-power Airy beams by the Kerr self-focusing and the Airy profile itself if they wer…
Higher-order Kerr terms allow ionization-free filamentation in gases
P. Béjot, J. Kasparian, S. Henin +6
We show that higher-order nonlinear indices (, , , ) provide the main defocusing contribution to self-channeling of ultrashort laser pulses in air and Argon…
Generalized Miller Formulae
W. Ettoumi, Y. Petit, J. Kasparian +1
We derive the spectral dependence of the non-linear susceptibility of any order, generalizing the common form of Sellmeier equations. This dependence is fully defined by the knowle…
Arbitrary-order non-linear contribution to self-steepening
J. Kasparian, P. Béjot, J. -P. Wolf
Based on the recently published generalized Miller formula, we derive the spectral dependence of the contribution of arbitrary-order non-linear indices to the group-velocity index.…
Spectral dependence of purely-Kerr driven filamentation in air and argon
W. Ettoumi, P. Béjot, Y. Petit +6
Based on numerical simulations, we show that higher-order nonlinear indices (up to and , respectively) of air and argon have a dominant contribution to both focusing…