Applied Physics B

, Volume 95, Issue 3, pp 559–563

Hybrid nonlinearity supported by nonconventionally biased photorefractive crystals

Authors

  • P. Zhang
    • Shaanxi Key Laboratory of Optical Information Technology, School of ScienceNorthwestern Polytechnical University
  • S. Liu
    • Shaanxi Key Laboratory of Optical Information Technology, School of ScienceNorthwestern Polytechnical University
  • C. Lou
    • The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education and TEDA Applied Physics SchoolNankai University
  • Y. Gao
    • Shaanxi Key Laboratory of Optical Information Technology, School of ScienceNorthwestern Polytechnical University
    • Shaanxi Key Laboratory of Optical Information Technology, School of ScienceNorthwestern Polytechnical University
  • J. Xu
    • The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education and TEDA Applied Physics SchoolNankai University
  • Z. Chen
    • The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education and TEDA Applied Physics SchoolNankai University
    • Department of Physics and AstronomySan Francisco State University
Article

DOI: 10.1007/s00340-009-3486-z

Cite this article as:
Zhang, P., Liu, S., Lou, C. et al. Appl. Phys. B (2009) 95: 559. doi:10.1007/s00340-009-3486-z

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.

PACS

42.65.Jx42.65.Hw42.65.Tg

Copyright information

© Springer-Verlag 2009