title: Variational approach to spatial optical solitons in bulk cubic-quintic media stabilized by self-induced multiphoton ionization.
abstract: Propagation of an optical high-power cylindrically symmetric beam in a material characterized by cubic-quintic nonlinearity is studied both analytically and numerically. In this case we have to consider the self-defocusing effect caused by the presence of free electrons produced due to plasma formation. The variational method is used to study the system analytically. The finite-difference beam propagation method is used for the numerical analysis. Stable (2+1) D spatial solitons are observed. The analytical results are found to be in very good agreement with the numerical results.
authors.affiliation: Department of Physics, Cochin University of Science and Technology, Cochin 682022, India. jisha@cusat.ac.in
authors.forename: C P
authors.initials: CP
authors.lastname: Jisha
authors.forename: V C
authors.initials: VC
authors.lastname: Kuriakose
authors.forename: K
authors.initials: K
authors.lastname: Porsezian