Separate spatial soliton pairs in an unbiased series two-photon photorefractive crystal circuit |
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Authors: | Xuanmang Ji Qichang Jiang Jinsong Liu |
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Institution: | a Department of Physics and Electronic Engineering, Yuncheng University, Yuncheng 044000, China b College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, WuHan 430074, China |
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Abstract: | Dark (bright) steady-state spatial solitons are predicted in one dimension for a series circuit consisting of two two-photon photorefractive crystals of which at least one must be photovoltaic. Each crystal can support a spatial soliton. The two solitons are known collectively as separate spatial soliton pairs with three types: dark-dark, bright-dark and bright-bright. In the limit in which the optical wave has a spatial extent much less than the width of the crystal, the dark soliton can affect the other soliton by light-induced current, but the bright soliton cannot affect the other soliton in the soliton pair. |
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Keywords: | Nonlinear optics Separate spatial soliton pairs Two-photon photorefractive effect |
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