| 低振幅中心对称光折变暗和灰空间孤子的时间特性 |
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| 引用本文： | 吉选芒,姚纪欢,姜其畅,刘劲松.低振幅中心对称光折变暗和灰空间孤子的时间特性[J].光学学报,2011(10):164-169. |
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| 作者姓名： | 吉选芒 姚纪欢 姜其畅 刘劲松 |
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| 作者单位： | 山西运城学院物理与电子工程系;华中科技大学光电子科学与工程学院; |
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| 基金项目： | 山西省自然科学基金(2011011003-2); 山西省高等学校科技研究开发项目(20111125)资助课题 |
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| 摘 要： | 为了研究中心对称光折变晶体中低振幅暗和灰空间孤子的时间特性,推导出了含时间参量的空间电荷场和光波的动态演化方程.采用数值方法,得到了中心对称光折变晶体中低振幅空间暗和灰孤子强度包络和强度半峰全宽的时间演化特性.结果表明,初始阶段形成的宽度较宽的孤子,其宽度随时间单调递减到一个最小值直至稳态孤子的形成；在相同的演化时间内...
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| 关 键 词： | 非线性光学 中心对称光折变介质 空间孤子 低振幅 时间行为 |
Temporal Behavior of the Low-Amplitude Dark and Gray Spatial Solitons in Centrosymmetric Photorefractive Media |
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| Ji Xuanmang Yao Jihuan Jiang Qichang Liu Jinsong.Temporal Behavior of the Low-Amplitude Dark and Gray Spatial Solitons in Centrosymmetric Photorefractive Media[J].Acta Optica Sinica,2011(10):164-169. |
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| Authors: | Ji Xuanmang Yao Jihuan Jiang Qichang Liu Jinsong |
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| Institution: | Ji Xuanmang1 Yao Jihuan1 Jiang Qichang1 Liu Jinsong2(1Department of Physics and Electronic Engineering,Yuncheng University,Yuncheng,Shanxi 044000,China 2College of Optoelectronic Science and Engineering,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China) |
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| Abstract: | In order to study the temporal behavior of the low-amplitude dark and gray spatial solitons in biased centrosymmetric photorefractive crystals,the expressions of time-dependent space-charge field and dynamical evolution equation are obtained.The temporal behavior of the intensity profiles and the intensity full width at half maximum(FWHM) of dark and gray solitons are obtained by numerical method.The results indicate that a broad soliton is generated at the beginning,and as time evolves,the intensity width ... |
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| Keywords: | nonlinear optics centrosymmetric photorefractive material spatial soliton low amplitude temporal behavior |
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