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Faccio, Daniele; Clerici, Matteo; Averchi, Alessandro; Jedrkiewicz, Ottavia; Tzortzakis, Stelios; Papazoglou, Dimitrios; Bragheri, Francesca; Tartara, Luca; Trita, Andrea; Henin, Stefano; Cristiani, Ilaria; Couairon, Arnaud; Di Trapani, Paolo (2008)
Publisher: Optical Society of America
Languages: English
Types: Article
Subjects:

Classified by OpenAIRE into

arxiv: Physics::Optics
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.

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