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Three-dimensional light bullets in arrays of waveguides

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...

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Bibliographic Details
Published in:Physical review letters 2010-12, Vol.105 (26), p.263901-263901, Article 263901
Main Authors: Minardi, S, Eilenberger, F, Kartashov, Y V, Szameit, A, Röpke, U, Kobelke, J, Schuster, K, Bartelt, H, Nolte, S, Torner, L, Lederer, F, Tünnermann, A, Pertsch, T
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Language:English
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.105.263901