title: Stable oscillating nonlinear beams in square-wave-biased photorefractives.
abstract: We demonstrate experimentally that, in a paraelectric, nonstationary boundary conditions can dynamically halt the intrinsic instability of quasi-steady-state photorefractive self-trapping, driving beam evolution into a stable oscillating two-soliton-state configuration.
authors: Fondazione Ugo Bordoni, Via B. Castiglioni 59, 00142 Rome, Italy.
authors: G M
authors: GM
authors: Tosi-Beleffi
authors: M
authors: M
authors: Presi
authors: E
authors: E
authors: DelRe
authors: D
authors: D
authors: Boschi
authors: C
authors: C
authors: Palma
authors: A J
authors: AJ
authors: Agranat