高激发态原子的相干效应  

Coherence effect of high excited state atoms

作　　者：赵健东[1] 辛洁[1] 

机构地区：[1]中北大学信息与通信工程学院,太原030051

出　　处：《物理学报》2012年第19期152-156,共5页Acta Physica Sinica

基　　金：中北大学2010年校基金资助的课题~~

摘　　要：本文以高激发态原子为研究对象,由基态、激发态和高激发态能级形成阶梯型三能级系统,理论上求解阶梯型三能级系统的密度矩阵方程,研究了高激发态原子的相干效应,计算获得探测光的吸收和色散曲线.并研究了高激发态原子间相互作用以及外加电场对相干效应的影响.结果表明,外加场可以使吸收和色散曲线产生频移.The ladder three-level system including ground state, excited state and high excited state is investigated by using the density matrix equations. The coherence effect of ladder three-level system is analyzed, and absorption and dispersion curves of weak probe laser are obtained. The effects of interaction between high excited atoms and external electric field on the coherence effect are also investigated. The result shows that the interaction between high excited atoms or the external field can make the absorption curve and the dispersion curve shifted.

关 键 词：高激发态原子 阶梯型三能级 相干效应 

分 类 号：O431.2[机械工程—光学工程]