Collapse dynamics of super-Gaussian beams

Taylor D. Grow, Amiel A. Ishaaya, Luat T. Vuong, Alexander L. Gaeta, Nir Gavish, Gadi Fibich

Research output: Contribution to journalArticlepeer-review

Abstract

We investigate the self-focusing dynamics of super-Gaussian optical beams in a Kerr medium. We find that up to several times the critical power for self-focusing, super-Gaussian beams evolve towards a Townes profile. At higher powers the super-Gaussian beams form rings which break into filaments as a result of noise. Our results are consistent with the observed self-focusing dynamics of femtosecond laser pulses in air [1] in which filaments are formed along a ring about the axis of the initial beam where the initial beam did not form a ring.

Original languageEnglish
Pages (from-to)5468-5475
Number of pages8
JournalOptics Express
Volume14
Issue number12
DOIs
StatePublished - 2006

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