引入量子干涉的双光子共振非简并四波混频  

Two-photon resonant nondegenerate four-wave mixing via quantum interference

作　　者：孙江[1] 左战春[1] 米辛[1] 俞祖和[1] 吴令安[1] 傅盘铭[1] 

机构地区：[1]中国科学院物理研究所光物理实验室,北京100080

出　　处：《物理学报》2005年第1期149-154,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号 :10 1740 96;10 3 74113 )资助的课题~~

摘　　要：研究了级联四能级系统中双光子共振非简并四波混频 (NFWM)由于加入耦合光场而产生的量子干涉效应 ,发现在强耦合场作用下NFWM频谱呈现AT劈裂 ,它反映的是两个缀饰态的能级 .量子干涉还使NFWM信号被抑制或增强 .此方法牵涉到三光子共振 。We study the quantum interference in two-photon resonant nondegenerate four-wave mixing (NFWM) in a dressed cascade four-level system in which the two upper levels are coupled by a strong laser field. We find that in the presence of a strong coupling field, two-photon resonant NFWM spectrum exhibits Autler-Townes splitting, which reflects the levels of the dressed states. It also leads to either suppression or enhancement of the NFWM signal. This scheme involves the resonant three-photon excitation, therefore, provides a new spectroscopic tool for studying highly excited atomic states with high sensitivity.

关 键 词：简并四波混频 双光子 量子干涉效应 四能级系统 缀饰态 激发态 光场 级联 频谱 信号 

分 类 号：O431.2[机械工程—光学工程] O413.1[理学—光学]