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Chin. Phys., 2000, Vol. 9(9): 667-671    DOI: 10.1088/1009-1963/9/9/006


Liu Jing-song, Zhang Du-ying, Liang Chang-hong
Institute of Applied Physics, Xidian University, Xi'an 710071, China
Abstract  We present a theoretical analysis of the stability of screening-photovoltaic (SP) spatial solitons in biased photovoltaic-photorefractive materials in the case of neglecting the loss of the material and the effect of diffusion. When an incident optical beam is a SP soliton, this beam propagates along a linear path with its shape kept unchanged. When the maximum amplitude, width and functional form of an incident optical beam are slightly different from those of a SP soliton, the beam reshapes itself and tries to evolve into a solitary wave after a short distance. That is, these SP solitons are stable against small perturbations. However, optical beams that significantly differ from SP soliton solutions tend to experience larger cycles of compression and expansion, and their maximum amplitudes oscillate with propagation distances. The larger the perturbations, the stronger the oscillation.
Keywords:  photorefractive effects      nonlinear optics      spatial solitons  
Received:  27 November 1999      Published:  10 June 2005
PACS:  42.65.Hw (Phase conjugation; photorefractive and Kerr effects)  
  42.65.Tg (Optical solitons; nonlinear guided waves)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 69878022) and the Science Foundation of Shaanxi Province, China.

Cite this article: 

Liu Jing-song, Zhang Du-ying, Liang Chang-hong STABILITY OF BRIGHT SCREENING-PHOTOVOLTAIC SPATIAL SOLITONS 2000 Chin. Phys. 9 667

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