title: Spatial screening solitons as particles
abstract: Photorefractive spatial screening solitons are treated as rays using geometrical optics. The ray picture is transformed into a classical mechanics picture, in which solitons move self-consistently as particles in a potential created by the induced change in the refractive index. The Hamiltonian equations of motion are integrated to yield trajectories that agree with the optical center-of-mass trajectories. The motion in the transverse plane is found to be not central and the orbits are not closed, preventing the spiraling of solitons.
authors.affiliation: Institute of Physics, P.O. Box 57, 11001 Belgrade, Yugoslavia.
authors.initials: MR
authors.lastname: Belic
authors.initials: A
authors.lastname: Stepken
authors.initials: F
authors.lastname: Kaiser