title: Optical light bullets in a pure Kerr medium.
abstract: We show that small negative fourth-order dispersion can arrest spatiotemporal collapse of ultrashort pulses with anomalous dispersion in a planar waveguide with pure Kerr nonlinearity, resulting in (2 + 1)D optical bullets. Similarly to solitons, these bullets undergo elastic collisions. Since these bullets can self-trap from noisy Gaussian input beams and propagate without any power losses, this result may be used to realize experimentally stable, nondissipative optical bullets.
authors.affiliation: Department of Applied Mathematics, Tel Aviv University, Tel Aviv 69978, Israel. fibich@math.tau.ac.il
authors.forename: Gadi
authors.initials: G
authors.lastname: Fibich
authors.forename: Boaz
authors.initials: B
authors.lastname: Ilan