| 弱光强空间屏蔽光伏明孤子的动态演化特性 |
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| 引用本文： | 张都应,刘劲松,梁昌洪. 弱光强空间屏蔽光伏明孤子的动态演化特性[J]. 光学学报, 2002, 22(7): 09-812 |
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| 作者姓名： | 张都应 刘劲松 梁昌洪 |
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| 作者单位： | 西安电子科技大学技术物理学院,西安,710071;西安电子科技大学技术物理学院,西安,710071;西安电子科技大学技术物理学院,西安,710071 |
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| 基金项目： | 国家自然科学基金 (6 98780 2 2 )资助课题 |
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| 摘 要： | 在忽略晶体损耗和扩散效应的情况下,讨论了加外电场的光伏光折变晶体中弱光强空间屏蔽光伏明孤子及其演化特性,在弱光强条件下得到了空间屏蔽光伏明孤子的解析解表达式,与运用数值计算的方法所得到的结果十分吻合,该方法解决了以往数值求解动态演化方程时必须先数值求解常数分方程或积分方程的问题,讨论了参量失配情况下空间屏蔽光伏明孤子的动态演化特征。
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| 关 键 词： | 非线性光学 空间孤子 光折变效应 |
| 收稿时间： | 2001-05-14 |
Dynamic Evolution of Spatial Screening-Photovoltaic Bright Soliton under Weak Amplitude Condition |
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| Zhang Duying Liu Jinsong Liang Changhong. Dynamic Evolution of Spatial Screening-Photovoltaic Bright Soliton under Weak Amplitude Condition[J]. Acta Optica Sinica, 2002, 22(7): 09-812 |
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| Authors: | Zhang Duying Liu Jinsong Liang Changhong |
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| Abstract: | Neglecting both the crystal loss and the diffusion effect, both the weak light intensity spatial screening photovoltaic (SP) bright solitons in the photovoltaic photorefractive crystal with an applied electric field and their evolution characteristrcs are discussed. The analytic expression for the spatial screening photovoltaic bright solitons obtained under the weak light intensity agrees well with the results obtained by the numerical calculation. This practice solves the previous problem that it is necessary to first solve the differential equation or the integral equation while numerically solving the dynamical evolution equation. The dynamical evolution of the spatial screening photovoltaic bright solitons under the condition of parameter mismatch is also discussed. |
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| Keywords: | nonlinear optics spatial soliton photorefractive effect |
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