title: Dynamics of a misaligned astigmatic twisted Gaussian beam in a Kerr-nonlinear parabolic waveguide.
abstract: Using the Galerkin criterion in the basis of flexible generalized Gaussian modes, the equations of motion are derived for the parameters of a misaligned astigmatic twisted Gaussian beam in an axially symmetric nonlinear medium. Nontrivial features of the beam dynamics (e.g., phase locking, cycle generation, nonlinear symmetry change) in a parabolic waveguide with Kerr nonlinearity are revealed.
authors.affiliation: Saratov State University, Saratov 410026, Russia.
authors.forename: L A
authors.initials: LA
authors.lastname: Melnikov
authors.forename: V L
authors.initials: VL
authors.lastname: Derbov
authors.forename: A I
authors.initials: AI
authors.lastname: Bychenkov