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Hybrid nonlinearity supported by nonconventionally biased photorefractive crystals

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Abstract

We theoretically and experimentally demonstrate that a nonconventionally biased photorefractive crystal can support hybrid nonlinearity, i.e., coexistence of self-focusing and self-defocusing nonlinearities under an identical bias condition. It is revealed that the nonlinearity experienced by a one-dimensional (stripe) beam can be switched between self-focusing and self-defocusing solely by changing the beam orientation. For a two-dimensional beam, the hybrid nonlinearity leads to unusual nonlinear beam dynamics with enhanced anisotropy and nonlocality.

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Authors and Affiliations

  1. Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi’an, 710072, China

    P. Zhang, S. Liu, Y. Gao & J. Zhao

  2. The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education and TEDA Applied Physics School, Nankai University, Tianjina, 300457, China

    C. Lou, J. Xu & Z. Chen

  3. Department of Physics and Astronomy, San Francisco State University, San Francisco, 94132, USA

    Z. Chen

Authors
  1. P. Zhang
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  2. S. Liu
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  3. C. Lou
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  4. Y. Gao
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  5. J. Zhao
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  6. J. Xu
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  7. Z. Chen
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Correspondence to J. Zhao.

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Zhang, P., Liu, S., Lou, C. et al. Hybrid nonlinearity supported by nonconventionally biased photorefractive crystals. Appl. Phys. B 95, 559–563 (2009). https://doi.org/10.1007/s00340-009-3486-z

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  • DOI: https://doi.org/10.1007/s00340-009-3486-z

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