Three-Dimensional Light Bullets in Arrays of Waveguides

in: Physical Review Letters (2010)
Minardi, Stephano; Eilenberger, Falk; Kartashov, Yarsolav V.; Szameit, Alexander; Röpke, Ulrich; Kobelke, Jens; Schuster, Kay; Bartelt, Hartmut; Nolte, Stephan; Torner, Lluis; Lederer, Falk; Tünnermann, Andreas; Pertsch, Thomas
We report the first experimental observation of three-dimensional light bullets, excited by femtosecond pulses in a system featuring quasi-instantaneous cubic nonlinearity and a periodic, transversally modulated refractive index. Stringent evidence of the excitation of light bullets is based on time-gated images and spectra which perfectly match our numerical simulations. Furthermore, we reveal a novel evolution mechanism forcing the light bullets to follow varying dispersion or diffraction conditions, until they leave their existence range and decay.

DOI: Array

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