Influence of dark irradiation on transition process from self-defocusing to self-focusing in LiNbO3:Fe crystals | Zendy

Chunfu Huang | Zendy; Ru Guo | Zendy; Liu Si-Min | Zendy; Shu Qiang | Zendy; Gao Yuan-Mei | Zendy; Wan Da-Yun | Zendy; Liu Zhao-hong | Zendy; Zhang Xiaohua | Zendy; Lü Yi | Zendy

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Influence of dark irradiation on transition process from self-defocusing to self-focusing in LiNbO3:Fe crystals

Author(s) -

Chunfu Huang,

Ru Guo,

Liu Si-Min,

Shu Qiang,

Gao Yuan-Mei,

Wan Da-Yun,

Liu Zhao-hong,

Zhang Xiaohua,

Lü Yi

Publication year - 2004

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.53.1367

Subject(s) - irradiation , photorefractive effect , self focusing , materials science , optics , condensed matter physics , process (computing) , optoelectronics , physics , laser beams , laser , quantum mechanics , computer science , operating system

We have studied the dynamic propagation of an optical beam from selfdefocusing to selffoc using in photovoltaic photorefractive crystals LiNbO3:Fe in the framework of a t wodimensional band transport model. The results show that dark irradiation pla ys an important part in the transition process. The transition occurs only when th e normalized dark irradiation is very small. We discuss also the influence of py roelectric effect on the transition process.

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