Light Filaments Without Self Guiding
Audrius Dubietis, Eugenijus Gaizauskas, Gintaras Tamosauskas, Paolo Di Trapani
Abstract
An examination of the propagation of intense 200 fs pulses in water reveals light filaments not sustained by the balance between Kerr-induced self-focusing and plasma-induced defocusing. Their appearance is interpreted as the consequence of a spontaneous reshaping of the wave packet form a gaussian into a conical wave, driven by the requirement of maximum localization, minimum losses and stationarity in the presence of non-linear absorption.
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