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Título: | On negative higher-order Kerr effect and filamentation |
Autor: | Loriot, V. CSIC ORCID; Béjot, P.; Ettoumi, W.; Petit, Y.; Kasparian, J.; Henin, S.; Hertz, E.; Lavorel, B.; Faucher, O.; Wolf, J.-P. | Fecha de publicación: | 4-jun-2011 | Editor: | Springer Nature | Citación: | Laser Physics 21: 1319-1328 (2011) | Resumen: | As a contribution to the ongoing controversy about the role of higher-order Kerr effect (HOKE) in laser filamentation, we first provide thorough details about the protocol that has been employed to infer the HOKE indices from the experiment. Next, we discuss potential sources of artifact in the experimental measurements of these terms and show that neither the value of the observed birefringence, nor its inversion, nor the intensity at which it is observed, appear to be flawed. Furthermore, we argue that, independently on our values, the principle of including HOKE is straightforward. Due to the different temporal and spectral dynamics, the respective efficiency of defocusing by the plasma and by the HOKE is expected to depend substantially on both incident wavelength and pulse duration. The discussion should therefore focus on defining the conditions where each filamentation regime dominates. © 2011 Pleiades Publishing, Ltd. | Descripción: | 10 pags, 11 figs, 2 pags | Versión del editor: | http://dx.doi.org/10.1134/S1054660X11130196 | URI: | http://hdl.handle.net/10261/253429 | DOI: | 10.1134/S1054660X11130196 | Identificadores: | doi: 10.1134/S1054660X11130196 issn: 1054-660X |
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