title: Dynamic nonlinear X waves for femtosecond pulse propagation in water.
abstract: Recent experiments involving femtosecond pulses in water displayed long-distance propagation analogous to that reported in air. We verify this phenomenon numerically and show that the propagation is dynamic as opposed to self-guided. Furthermore, we demonstrate that the propagation can be interpreted as being due to dynamic nonlinear X waves whose robustness and role in long-distance propagation follows from the interplay between nonlinearity and chromatic dispersion.
authors.affiliation: ACMS and Optical Sciences Center, University of Arizona, Tucson, AZ 85721, USA.
authors.forename: M
authors.initials: M
authors.lastname: Kolesik
authors.forename: E M
authors.initials: EM
authors.lastname: Wright
authors.forename: J V
authors.initials: JV
authors.lastname: Moloney