Surface waves with photorefractive nonlinearity

The photorefractive surface waves with photorefractive nonlinearity of diffusion, drift, and photovoltaic effect is studied numerically for the first time. We find out that the essential cause of photorefractive surface waves is diffusion mechanism, but not drift and photovoltaic effects. The photov...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2007-07, Vol.76 (1), Article 013827
Main Authors: Zhang, T. H., Ren, X. K., Wang, B. H., Lou, C. B., Hu, Z. J., Shao, W. W., Xu, Y. H., Kang, H. Z., Yang, J., Yang, D. P., Feng, L., Xu, J. J.
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DIFFUSION
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
NONLINEAR PROBLEMS
PHOTOVOLTAIC EFFECT
WAVE PROPAGATION
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Summary:The photorefractive surface waves with photorefractive nonlinearity of diffusion, drift, and photovoltaic effect is studied numerically for the first time. We find out that the essential cause of photorefractive surface waves is diffusion mechanism, but not drift and photovoltaic effects. The photovoltaic effect only has strong influence on the profile of photorefractive surface waves; the applied external electric field can also change the profile of the surface waves, and even destroy the mode upon a threshold, which provides a possible method to transform the modes of surface waves between high-frequency modes and low-frequency modes.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.76.013827