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Incoherently coupled grey-grey screening-photovoltaic soliton pairs in biased photovoltaic-photorefractive crystals

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The incoherently coupled grey-grey screening-photovoltaic soliton pairs are predicted in biased photovoltaic-photorefractive crystals under steady-state conditions. These grey-grey screening-photovoltaic soliton pairs can be established provided that the incident beams have the same polarization, wavelength, and are mutually incoherent. Relevant example is presented where the photovoltaic-photorefractive crystal is of lithium niobate type. The grey-grey screening-photovoltaic soliton pairs can be considered as the united form of grey-grey screening soliton pairs and closed-circuit grey-grey photovoltaic soliton pairs. They reduce to grey-grey screening soliton pairs in the absence of photovoltaic effect, whereas they will become grey-grey photovoltaic pairs in the closed-circuit condition when the bias field is not applied.

Keywords: Photorefractive; photovoltaic effect; spatial soliton

Document Type: Original Article


Affiliations: Department of Physics, Harbin Institute of Technology, Harbin 150001, China

Publication date: January 1, 2001


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