Spatial solitons in biased two-photon photorefractive crystals with both the linear and quadratic electro-optic effect

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• 作者：Lili Hao ; Chunfeng Hou ; Qiang Wang
• 关键词：Spatial soliton ; Two-photon effect ; Electro-optic effect
• 刊名：Optics and Laser Technology
• 出版年：March, 2014
• 年：2014
• 卷：56
• 期：Complete
• 页码：326-333
• 全文大小：615 K

文摘

The evolution equation of one-dimension spatial optical solitons resulting from two-photon effect in biased photorefractive crystals with both the linear and quadratic electro-optic effect is presented theoretically. Under appropriate conditions, our analysis indicates that bright, dark photorefractive spatial solitons can exist in the steady-state regime. The analytical solutions in the low amplitude regime are also obtained. Moreover, we theoretically discuss the self-deflection of bright solitons by taking the diffusion effect into account. Both the self-deflection effects follow a cubic polynomial of the applied bias field, and increase considerably at higher values of applied bias field. Relevant examples are provided.