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.

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

FACCIO, DANIELE FRANCO ANGEL;M. Clerici;JEDRKIEWICZ, OTTAVIA;DI TRAPANI, PAOLO
2008-01-01

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.
2008
Faccio, DANIELE FRANCO ANGEL; M., Clerici; A., Averchi; Jedrkiewicz, Ottavia; S., Tzortzakis; D. G., Papazoglou; F., Bragheri; L., Tartara; A., Trita;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/1791021
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