Abstract The coupling between two mutually incoherent optical beams that propagate collinearly in open-circuit photovoltaic photorefractive media is investigated. It is shown that an incoherently coupled bright—dark spatial soliton pair can be formed due to photovoltaic effect. The physical properties of such a soliton pair are also discussed.
Received: 21 June 2004
Revised: 24 August 2004
Accepted manuscript online:
Fund: Project supported by the Scientific Research Foundation of Harbin Institute of Technology, and the Science and Technology Programme of Heilongjiang Province.
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