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

• DOI: 10.1364/josab.22.000862
• Publication Date: 2005-04-12T19:34:56Z
• Authors: Daniele Faccio; Paolo Di Trapani; Stefano Minardi; Alberto Bramati; Francesca Bragheri; Carlo Liberale; Vittorio Degiorgio; Audrius Dubietis; Aidas Matijosius
• Keywords: Filamentation; Chirp; Self-phase modulation; Characterization

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