Spatiotemporally Localized Multidimensional Solitons in Self-Induced   Transparency Media
  "Light bullets" are multi-dimensional solitons which are localized in both space and time. We show that such solitons exist in two- and three-dimensional self-induced-transparency media and that they are fully stable. Our approximate analytical calculation, backed and verified by direct numerical simulations, yields the multi-dimensional generalization of the one-dimensional Sine-Gordon soliton. 
M. Blaauboer, B.A. Malomed, and G. Kurizki