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arXiv · 1102.1284

Ultrashort light bullets described by the two-dimensional sine-Gordon equation

Hervé Leblond·Dumitru Mihalache
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Abstract

By using a reductive perturbation technique applied to a two-level model, this study puts forward a generic two-dimensional sine-Gordon evolution equation governing the propagation of femtosecond spatiotemporal optical solitons in Kerr media beyond the slowly varying envelope approximation. Direct numerical simulations show that, in contrast to the long-wave approximation, no collapse occurs, and that robust (2+1)-dimensional ultrashort light bullets may form from adequately chosen few-cycle input spatiotemporal wave forms. In contrast to the case of quadratic nonlinearity, the light bullets oscillate in both space and time and are therefore not steady-state lumps.

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Hervé Leblond, Dumitru Mihalache. 2011-02-07. Ultrashort light bullets described by the two-dimensional sine-Gordon equation. https://doi.org/10.1103/physreva.81.063815

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