• Some aspects of optical spatial solitons in photorefractive media and their important applications

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    • Keywords

       

      Photorefractive nonlinearity; photovoltaic effect; optical spatial solitons; two-photon photorefractive phenomenon; modulation instability.

    • Abstract

       

      Some important properties of photorefractive spatial solitons and their applications have been reviewed in the present paper. Using band transport model, the governing principle of photorefractive nonlinearity has been addressed and nonlinear dynamical equations of spatial solitons owing to this nonlinearity have been discussed. Mechanisms of formation of screening and photovoltaic solitons of three different configurations, i.e., bright, dark and grey varieties have been examined. Incoherently coupled vector solitons due to single and two-photon photorefractive phenomena have been highlighted. Modulation instability of a broad quasicontinuous optical beam has also been discussed. Finally possible applications have been highlighted.

    • Author Affiliations

       

      S Konar1 Vyacheslav A Trofimov2

      1. Department of Physics, Birla Institute of Technology, Mesra, Ranchi 835 215, India
      2. Faculty of Computational Mathematics and Cybernetics, Lomonosov Moscow State University, Vorobyovy Gory, Moscow 119992, Russia
    • Dates

       
  • Pramana – Journal of Physics | News

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