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Steady-State Spatial Screening Solitons in Photorefractive Materials with External Applied Field

1994; American Physical Society; Volume: 73; Issue: 24 Linguagem: Inglês

10.1103/physrevlett.73.3211

1092-0145

Mordechai Segev, George C. Valley, B. Crosignani, Paolo DiPorto, Amnon Yariv,

Nonlinear Waves and Solitons

Steady-state dark (bright) planar spatial solitons are predicted for photorefractive materials when the diffraction of an optical beam is exactly compensated by nonlinear self-defocusing (focusing), due to the screening field set up around a dark notch (or a bright beam) in a photorefractive material to which an external field is applied. These screening solitons appear in steady state and differ from previously observed spatial solitons in their properties and physical origin.