Filamentation in Kerr media from pulsed Bessel beams

P. Polesana, M. Franco, A. Couairon, D. Faccio, P. Di Trapani

Research output: Contribution to journalArticlepeer-review

150 Citations (Scopus)


In contrast with filamentation of ultrashort laser pulses with standard Gaussian beams in Kerr media, three different types of Bessel filaments are obtained in air or in water by focusing ultrashort laser pulses with an axicon. We thoroughly investigate the different regimes and show that the beam reshapes as a nonlinear Bessel beam which establishes a conical energy flux from the low intensity tails toward the high intensity peak. This flux efficiently sustains a high contrast long-distance propagation and easily generates a continuous plasma channel in air.

Original languageEnglish
Article number043814
Pages (from-to)-
Number of pages11
JournalPhysical Review A
Issue number4
Publication statusPublished - Apr 2008


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