五能级原子系统中的多重电磁感应透明  

Multiple electromagnetically induced transparency in a five-level atomic system

作　　者：胡小会[1] 侯邦品[1] 

机构地区：[1]四川师范大学物理与电子工程学院,成都610068

出　　处：《原子与分子物理学报》2008年第2期375-379,共5页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(10647007)

摘　　要：利用半经典理论,研究了在相干外场驱动下的倒三脚架型原子系统的吸收性质.数值计算结果表明:通过调节相干场的Rabi频率,该系统可以呈现出三重、双重、单重电磁感应透明;在三重电磁感应透明中,透明窗的位置可以通过调节相干场的失谐量来进行控制,而且透明点的位置可连续地变化,即在一定范围内存在一系列连续频率的探测光无吸收地通过介质.最后,在缀饰态表象中对上述现象给出了解释.The absorption properties in an inverted-tripod scheme atomic system driven by the coherent fields are investigated by means of the semiclassical theory.The result obtained by means of numerical method indicates that by adjusting the Rabi frequencies of the coherent fields,there appear triple,double,single electromagnetically induced transparency（EIT）.In the triple EIT,the location of transparent windows can be controlled by adjusting the detunings for the coherent fields,and changes continuously,i.e.there exist a series of continuous frequencies for the probe field propagating in an atomic medium without absorption in a certain range.Finally,the explanations of these phenomena are given by using the dressed states.

关 键 词：多重电磁感应透明 倒三脚架型原子 吸收性质 

分 类 号：O431.2[机械工程—光学工程]