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Y型四能级原子系统对探测场的吸收和色散
引用本文:张丽英,刘正东.Y型四能级原子系统对探测场的吸收和色散[J].物理学报,2005,54(8):3641-3645.
作者姓名:张丽英  刘正东
作者单位:南昌大学近代物理研究所,南昌 330047
基金项目:国家自然科学基金(批准号:10464002,60278016)资助的课题.
摘    要:运用数值模拟的方法计算了Y型四能级原子系统在弱场条件下对探测场的吸收和色散.结果发 现,通过调制能级间附加的外场强度,该系统呈现出电磁感应透明特性,出现增益区并伴有 较大负折射率的色散效应.同时还发现,当外加场的拉比频率相位发生改变时,系统对探测 光场的吸收和色散将随之变化. 关键词: 电磁感应透明 自发辐射 量子干涉

关 键 词:电磁感应透明  自发辐射  量子干涉
文章编号:1000-3290/2005/54(08)/3641-05
收稿时间:2004-11-30

Absorption and dispersion in probe laser in the four-level Y-type atom system
Zhang Li-Ying,LIU Zheng-dong.Absorption and dispersion in probe laser in the four-level Y-type atom system[J].Acta Physica Sinica,2005,54(8):3641-3645.
Authors:Zhang Li-Ying  LIU Zheng-dong
Abstract:In this paper we have calculated the absorption and dispersion of the probe laser in the four_level Y_type atom system at low light levels and found that if the external light fields are changed,the system would exhibit an electromagnetically induced transparency effect.At the same time,we found that the system could also exhibit enhancement accompanied with a big negative refractive index,and if the light field phase is changed,the absorption and dispersion of the probe laser are also changed.
Keywords:electromagnetically induced transparency  spontaneous emission  quantum interference
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