Holographic solitons in centrosymmetric photorefractive crystals |
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| Authors: | Kaiyun Zhan Chunfeng Hou Yanbo Pei |
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| Affiliation: | a Department of Physics, Harbin Institute of Technology, Harbin 150001, China
b College of Physics Science and Technology, China University of Petroleum, Dongying 257061, China |
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| Abstract: | The conditions necessary for obtaining holographic solitons in centrosymmetric photorefractive crystals are discussed. When both the intensity modulation of the two interacting waves and the angle between the vector of each beam and the longitudinal axis are small, centrosymmetric photorefractive crystals with a positive (or negative ) effective quadratic electro-optic coefficient are able to support bright (or dark) holographic solitons. The intensity width at half maximum of bright and dark solitons is inversely proportional to the external bias field. The holographic solitons can also exit in dissipative centrosymmetric photorefractive crystals when the applied external bias field is large enough. |
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| Keywords: | Holographic soliton Photorefractive crystal Quadratic electro-optic effect |
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