Opt Express. 2008 May 26;16(11):8213-8.

Kerr-induced spontaneous Bessel beam formation in the regime of strong two-photon absorption.

Faccio D, Clerici M, Averchi A, Jedrkiewicz O, Tzortzakis S, Papazoglou DG, Bragheri F, Tartara L, Trita A, Henin S, Cristiani I, Couairon A, Di Trapani P.

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CNISM and Dipartimento di Fisica e Matematica, Università dell'Insubria, Via Valleggio 11, Como, 22100, Italy. daniele.faccio@uninsubria.it

Abstract

We study the effect of Two-Photon Absorption (TPA) nonlinear losses on Gaussian pulses, with power that exceeds the critical power for self-focusing, propagating in bulk kerr media. Experiments performed in fused silica and silicon highlight a spontaneous reshaping of the input pulse into a pulsed Bessel beam. A filament is formed in which sub-diffractive propagation is sustained by the Bessel-nature of the pulse.

PMID:: 18545532; [PubMed - indexed for MEDLINE]

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Opt Express. 2008 May 26 ;16(11):8213-8.

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Kerr-induced spontaneous Bessel beam formation in the regime of strong two-photon absorption.

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