摘要
为了得到双光子非相干耦合亮-暗混合屏蔽光伏孤子族的结果,采用数值模拟方法,对稳态情况下多束互不相干的光束,在有外加电场的双光子光伏光折变晶体中的传播进行了研究。结果表明,具有相同偏振和相同波长的多束互不相干的入射光束,可在晶体中形成双光子非相干耦合亮-暗混合屏蔽光伏孤子族。双光子非相干耦合屏蔽光伏孤子族,可以看成是屏蔽孤子族和光伏孤子族的统一形式。当光伏场可忽略时,屏蔽光伏孤子族就转化为屏蔽孤子族,而当外加电场不存在时,屏蔽光伏孤子族相当于开路和闭路条件下的光伏孤子族。当孤子族中只含有两个光束分量时,孤子族就变为屏蔽光伏孤子对。研究结果可为空间光孤子理论的发展提供理论依据。
In order to obtain results of the two-photon incoherently coupled bright-dark hybrid screening-photovohaic spatial soliton families, the propagation of multiple mutually incoherent optical beams in biased two-photon photovoltaic-photorefractive crystal were numerically studied under steady-state conditions. It is shown that two-photon incoherently coupled bright-dark hybrid sereening-photovohaic soliton families can be established in the crystals with mutually incoherent incident beams at the same wavelength and polarization incident in the crystal. The screening-photovoltaic soliton families can be considered as the united form of screening soliton families and photovoltaic soliton families. When the photovohaic effect is negligible, the screening-photovohaic soliton families are the screening one. If the external field is absent, the sereening-photovoltaic soliton families are photovohaie ones under the open- and closed-circuit condition. Such soliton families reduce to screening-photovoltaic soliton pairs when they contain only two components. It turned out that this research provides theoretic basis for development of the spatial solitons theory.
出处
《激光技术》
CAS
CSCD
北大核心
2010年第5期619-623,共5页
Laser Technology
基金
山西省高等学校科技开发基金资助项目(200611042)
关键词
非线性光学
光折变效应
双光子光折变介质
空间孤子族
nonlinear optics
photorefractive effect
two-photon photorefraetive material
spatial optical soliton families