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Self-Bending of the Light Beam Trajectory in Photorefractive Crystals in an External Alternating-Sign Electric Field

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Abstract

The self-action effects of a light beam propagating in a cubic photorefractive crystal in a square-wave electric field are studied. It is demonstrated that the dark conductivity of the crystal or its illumination by noncoherent radiation distorts the beam profile with the initial Gaussian intensity distribution. The results of investigations into the influence of the nonlinearity of the space-charge field formation on self-bending of the beam trajectory are presented. It is demonstrated that the evolution of modulation instability in the light field distribution over the beam cross section depends on the initial beam profile, its asymmetry, and the direction of bending caused by the inhomogeneity of induced refractive-index changes.

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Authors and Affiliations

  1. Tomsk State University of Control Systems and Radio Electronics, Russia

    M. V. Borodin, S. M. Shandarov & R. V. Litvinov

  2. Joensuu University, Finland

    N. I. Nazhestkina

Authors
  1. M. V. Borodin
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  2. N. I. Nazhestkina
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  3. S. M. Shandarov
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  4. R. V. Litvinov
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Borodin, M.V., Nazhestkina, N.I., Shandarov, S.M. et al. Self-Bending of the Light Beam Trajectory in Photorefractive Crystals in an External Alternating-Sign Electric Field. Russian Physics Journal 44, 1050–1054 (2001). https://doi.org/10.1023/A:1015071410641

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  • DOI: https://doi.org/10.1023/A:1015071410641

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