文献类型：期刊文献

中文题名：多色控制下的非线性光学效应

英文题名：Multicolor Manipulation of Nonlinear Optical Effects

作者：郭洪菊[1];王春芳[2];龚尚庆[3]

机构：[1]上海出版印刷高等专科学校印刷设备工程系,上海200093;[2]上海理工大学理学院,上海200093;[3]华东理工大学理学院,上海200237

年份：2012

卷号：49

期号：8

起止页码：135

中文期刊名：激光与光电子学进展

外文期刊名：Laser & Optoelectronics Progress

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：上海市教育委员会优秀青年项目(slg10054);上海市教育委员会科研创新项目(11YZ118)资助课题

语种：中文

中文关键词：非线性光学;多色控制;色散转换;布居反转;Kerr非线性增强

外文关键词：nonlinear optics； multicolor manipulation； dispersion switching； population inversion； enhancement of Kerr nonlinearity

摘要：分析了三能级Λ原子系统内三色操控引起的色散转换、Kerr非线性增强效应及三色操控对布居反转的影响。分析表明,三色调控下多个双光子通道之间的干涉将引起多个透明窗口内的Kerr非线性增强和布居反转频带增宽。而三色场内两边频场的相对相位之和对色散变换、布居反转和Kerr非线性增强效应也起着至关重要的影响。相位之和从0调为π,将引起多个频带内色散正负转换,从而使得慢光速向超光速转换,引起Kerr非线性增强对应的频带位置改变,并引起布居反转对应的频带进一步增宽。相位之和影响以上非线性效应的原因也得到了分析。
Trichromatic manipulation of dispersion switching,enhancement of Kerr nonlinearity and population inversion are analyzed in a three-level Λ atomic system.It is shown that,due to the interference among multiple two-photon channels,the Kerr nonlinearity is enhanced in multiple transparent windows and the frequency band corresponding to population inversion becomes wider.On the other hand,the sum of the relative phases of the sideband components of the trichromatic field plays a crucial role in the response of the medium.As the sum phase is adjusted from 0 to π,dispersion is switched from normal to anomalous in multiple frequency regimes,which corresponds to the switching from subluminal to superluminal light propagation.With the sum phase changing from 0 to π,the Kerr nonlinearity is enhanced in other different frequency regimes,and the frequency band of population inversion is further widened.The influence mechanism of the sum phase is also analyzed.