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From X- to O-shaped spatiotemporal spectra of light filaments in water |
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| Authors: | Porras Miguel A Dubietis Audrius Kucinskas Ernestas Bragheri Francesca Degiorgio Vittorio Couairon Arnaud Faccio Daniele Di Trapani Paolo |
| Institution: | Departamento de Física Aplicada, ETSIM, Universidad Politécnica de Madrid, Rios Rosas 21, 28003 Madrid, Spain. miguelangel.porras@upm.es |
| Abstract: | We show that the angle-wavelength spectra of light filaments excited by ultrashort pulses experience a transition from X- to O-like structures when their carrier wavelengths are switched from normal to anomalous dispersion. Calculations confirm that the O-shaped conical emission follows the elliptic geometry of the nonlinear Schr?dinger equation with anomalous dispersion. |
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