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Time-resolved refractive index and absorption mapping of light-plasma filaments in water
Stefano Minardi, Amrutha Gopal, Michael Tatarakis +4
By means of a quantitative shadowgraphic method, we performed a space-time characterization of the refractive index variation and transient absorption induced by a light-plasma fil…
Conical emission, pulse splitting and X-wave parametric amplification in nonlinear dynamics of ultrashort light pulses
Daniele Faccio, Miguel A. Porras, Audrius Dubietis +3
The precise observation of the angle-frequency spectrum of light filaments in water reveals a scenario incompatible with current models of conical emission (CE). Its description in…
Far-field spectral characterization of conical emission and filamentation in Kerr media
Daniele Faccio, Paolo Di Trapani, Stefano Minardi +6
By use of an imaging spectrometer we map the far-field () spectra of 200 fs optical pulses that have undergone beam collapse and filamentation in a Kerr medium. By studying th…
Non-linear unbalanced Bessel beams: Stationary conical waves supported by nonlinear losses
Miguel A. Porras, Alberto Parola, Daniele Faccio +2
Nonlinear losses accompanying Kerr self-focusing substantially impacts the dynamic balance of diffraction and nonlinearity, permitting the existence of localized and stationary sol…
Non-linear space-time dynamics of ultrashort wave-packets in water
A. Matijosius, J. Trull, P. Di Trapani +4
We have monitored the space-time transformation of 150-fs pulse, undergoing self-focusing and filamentation in water, by means of the nonlinear gating tech- nique. We have observed…
Light Filaments Without Self Guiding
Audrius Dubietis, Eugenijus Gaizauskas, Gintaras Tamosauskas +1
An examination of the propagation of intense 200 fs pulses in water reveals light filaments not sustained by the balance between Kerr-induced self-focusing and plasma-induced defoc…