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Far-field spectral characterization of conical emission and filamentation in Kerr media

Daniele Faccio·Paolo Di Trapani·Stefano Minardi·Alberto Bramati·Francesca Bragheri·Carlo Liberale·Vittorio Degiorgio·Audrius Dubietis·Aidas Matijosius
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Abstract

By use of an imaging spectrometer we map the far-field ($θ-λ$) spectra of 200 fs optical pulses that have undergone beam collapse and filamentation in a Kerr medium. By studying the evolution of the spectra with increasing input power and using a model based on stationary linear asymptotic wave modes, we are able to trace a consistent model of optical beam collapse high-lighting the interplay between conical emission, multiple pulse splitting and other effects such as spatial chirp.

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Daniele Faccio, Paolo Di Trapani, Stefano Minardi, Alberto Bramati, Francesca Bragheri, Carlo Liberale, Vittorio Degiorgio, Audrius Dubietis, Aidas Matijosius. 2004-05-17. Far-field spectral characterization of conical emission and filamentation in Kerr media. https://doi.org/10.1364/josab.22.000862

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