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Nonlinearity of a response in photorefractive crystals with a square-wave applied field

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Abstract.

The space-charge-field formation in a photorefractive crystal illuminated by a one-dimensional light pattern is studied when an alternating square-wave electric field is applied to the crystal. We derive the general nonlinear equation for the time-averaged distribution of the space-charge field and employ the simplified versions of this equation to analyze the space-charge-field formation in the case of a Gaussian beam and interference light pattern. The borders of the applicability of simplified equations and analytic expressions to describe a self-action of light beams and the large modulation effects under two-beam coupling are estimated from the numerical calculations.

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Authors and Affiliations

  1. Department of Electronic Devices, State University of Control Systems and Radioelectronics, 40 Lenin Avenue, Tomsk 634050, Russia (Fax: +7-3822/414-321, E-mail: shand@stack.ru), , , , , , RU

    S.M. Shandarov & O.V. Kobozev

  2. Department of Physics, University of Joensuu, P.O. Box 111, FIN-80101, Joensuu, Finland, , , , , , FI

    N.I. Nazhestkina & A.A. Kamshilin

Authors
  1. S.M. Shandarov
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  2. N.I. Nazhestkina
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  3. O.V. Kobozev
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  4. A.A. Kamshilin
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Additional information

Received: 18 November 1998 / Revised version: 26 January 1999 / Published online: 12 April 1999

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Shandarov, S., Nazhestkina, N., Kobozev, O. et al. Nonlinearity of a response in photorefractive crystals with a square-wave applied field . Appl Phys B 68, 1007–1012 (1999). https://doi.org/10.1007/s003400050738

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  • DOI: https://doi.org/10.1007/s003400050738

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